下元节-数学小报

.
练习一
39-23-13= 45-9-34= 99-85-12=
98-12-84= 59+11+11= 34+18+12=
25+16+13= 14+7+14= 25-8+10=
27-13+20= 44-24+11= 52-28+9=
80-20-60= 84-20-25= 74-50-17=
64-34-17= 40-28+28= 43-29+27=
60-30+10= 18+30-11= 30+26+16=
7+18+17= 57+8+18= 62+9+19=
36-23+18= 45+9-34= 99-85+17=
98-84+19= 88-9-72= 82-10-68=
.

.
练习二
88-44-14= 66-33-3= 78-24-14=
22+26+18= 36-12+12= 55+25-23=
47-25+13= 78-25-15= 33+39-19=
58+60-28= 28+31-11= 42+36-22=
33+28-18= 36+25-36= 78+13-58=
66+50-56= 89-45-44= 93-12-31=
87-55-12= 66-33+4= 28+13+22=
26-19+24= 33+19-33= 47+14-27=
75-25+26= 34-18+36= 19+28-9=
33-18+35= 48+16-28= 73-11-22=
.

.
练习三
69-47-11= 58-15-40= 72-35+16=
58-22-27= 5+37+27= 17+33+11=
16+37-22= 7+33+38= 40-16-13=
66-23-18= 32-25+10= 12+35-25=
11+36-39= 40-38+19= 47-19-17=
67+23+3= 16+6+25= 6+18+16=
66+14+6= 90-18-10= 88+5-78=
78+10-68= 68-59+4= 57-48+29=
48-29-9= 55-11+46= 16+55-22=
20-5+45= 50-22+17= 54-25-25=
.

.
练习四
56-28-8= 68-26-23= 41-19+10=
52-14+14= 48+18-37= 17+4+14=
75+16-5= 75+12-5= 18+28+11=
26+25+45= 48-29+10= 16+47-34=
45-36+11= 41-23+10= 55+18+17=
68-39-9= 75-37-30= 92-36-30=
65-30-29= 16+55+22= 58+22+13=
17+35-23= 56+14+24= 18+39+16=
16+35+25= 76-29-28= 91-22-20=
74-27-29= 93-44-42= 16+37+17=
.

.
练习五
17-4+17= 75+16-45= 75-26+35=
18+28-17= 44-24-18= 67-39-19=
98-49+10= 48-8-21= 68-9-57=
69+9-57= 48+23+10= 10+47+33=
46+36+19= 45+28+18= 88-44-38=
65-56-5= 35+35+10= 18+35+25=
17+36+33= 40+39+13= 62+28-60=
84-20+27= 74-50+19= 64+37-14=
18+4+14= 8+44+46= 27+44+13=
57+15+11= 38+25+12= 25+8+18=
.

.
练习六
67-18+23= 16-7+25= 26+18-12=
66+15-16= 19+44+11= 66-20-18=
79-29-35= 33-4-20= 37-18-4=
17+44+22= 8+44-43= 9+44-11=
11+44-22= 21+44-13= 16-7+25=
45-16-14= 77-18-50= 89-10-34=
83-44-23= 45-27+10= 4-65-16=
64-23-19= 66-17-33= 73-34-10=
18+9-19= 64-55+5= 26+15+25=
35+45+10= 27+32+23= 41+19+10=
.

.
练习七
90-47+44= 99-53+35= 72-36+25=
50+25-24= 58+22-23= 79-38+27=
58-47+11= 58+15-40= 58+25-46=
88-44+37= 40+16-27= 63+23-18=
79-27+9= 38+29-19= 75-37+30=
36+28-8= 68+26-28= 55+25-25=
91-22+20= 67-39+9= 76-29+28=
44-24+18= 93-36+30= 60+30-29=
27+11-17= 33+3-20= 50+11-23=
34+12-17= 25+13-19= 14-7+14=
.

.
练习八
48+18-21= 45+34-50= 64-56+5=
68+19-57= 66+28-16= 69+19-57=
88-44+38= 66+17-33= 63+23-19=
79+9-55= 20+25-17= 60-19+18=
72+18-79= 82-44+23= 49+39-15=
48+48-40= 47+19-17= 90-18+10=
25+19-14= 77+14-50= 57-18+11=
38-29+12= 25+33-13= 18-4+17=
84-65+28= 30+36-18= 15+16-17=
57-38+18= 30-13+28= 26-15+15=
.

.
练习九
100-89+8= 42-17+28= 56-19+28=
61-12-24= 97-69+30= 65+11+19=
38+50+5= 27+18+1= 61+10-35=
12+54-63= 94-92+30= 69+11+5=
4-3+39= 91-7-62= 58+32-35=
78+10-86= 27+15-13= 55-47+67=
23+37-13= 24+33-33= 23+66-72=
78-59+40= 47+49-86= 47+44+6=
70-9+16= 57-12-39= 65+11+19=
67+26-36= 13-2+20= 17-3+4=
.

.
练习十
12+54-63= 33+31-13= 74-58+57=
23+17+16= 91-7-62= 56+43-87=
34+49-22= 87-57-21= 55-47+67=
12+82-23= 12+82-23= 15+38+32=
78-59+40= 20+73+3= 31+57+6=
14+36+37= 57+40+1= 18+45+15=
43+35+11= 68+5+2= 19+16+32=
19+16+32= 38+50+5= 57-12-39=
42+28+5= 42+28+5= 94-92+30=
17-3+4= 97-69+30= 97-69+30=
.

.
练习十一
58+32-35= 23+17+16= 61+10-35=
61+10-35= 23+37-13= 87-57-21=
4-3+39= 4-3+39= 47+49-86=
15+38+32= 78+7+12= 82+11+6=
90+5+4= 12+57+13= 20+53+24=
82-28-33= 27+15-13= 27+15-13=
65+11+19= 38+50+5= 23+66-72=
23+66-72= 12+54-63= 94-92+30=
70-9+16= 70-9+16= 91-7-62=
58+32-35= 13-2+20= 13-2+20=
.

.
练习十二
55-47+67= 23+37-13= 74-58+57=
15+38+32= 78-59+40= 47+49-86=
34+49-22= 38+50+5= 57-12-39=
65+11+19= 12+82-23= 94-92+30=
17-3+4= 12+54-63= 19+16+32=
58+32-35= 36+4-24= 57-39-4=
55+15-54= 40+27-37= 54-34+3=
95-60+60= 45+30-21= 22+62-49=
64+19-60= 99-39+3= 69+2-4=
93-26-33= 43-20-13= 71-42+41=
.

.
练习十三
19-4+50= 18+46-26= 49-6+12=
31+43-3= 56-28+35= 78-39-24=
82-61-20= 90-15-29= 11+14-11=
93+4+2= 87+10+7= 72+22+2=
69+16+6= 84+14+2= 14+16+30=
68-61-5= 65+25+7= 6+21+51=
28+56+1= 80+16+3= 70+4+17=
95+1+3= 34+11+52= 65+26+3=
1+86+4= 78+19+2= 87+7+1=
47+28+18= 68+23+8= 64+21+5=
.

.
练习十四
47-25-3= 63-44-6= 44-19-18=
89-51-24= 32-24-3= 31-25-3=
82-53-10= 85-44-8= 98-23-17=
54-37-16= 82-9-3= 98-97-1=
96-84-2= 74-40-24= 47-18-11=
86-42-23= 63-55-5= 83-44-18=
91-28-24= 30-26-3= 64+20+13=
35-25-1= 32+12-5= 74+21+5=
21+77+3= 27+37-22= 72+17+8=
6-19-41= 83+16+1= 22-20+63=
.

.
练习十五
78+9+2= 23+12+48= 97+35-54=
75+22+2= 34-7+28= 30-28+50=
85-49-14= 43+10+32= 45+63-62=
76-48-19= 53+23-43= 24-2+7=
57+31-38= 80-66+58= 22+11-5=
46-43+76= 69-54+49= 27-9-2=
46-43+76= 69-49+49= 66-25-6=
59+39-53= 69-54-15= 66-25-15=
14+12+25= 69-3-66= 66-25-6=
14+12+25= 53+28-28= 25+44-30=
.

.
练习十六
61-27+9= 52+5-44= 22+11-5=
46-43+76= 25+67-14= 75+17-18=
46+43-46= 69-54+49= 7+50-56=
68-38+34= 69-54+49= 66-25-6=
14+84-65= 18-10+21= 66-25-6=
14+15+25= 47-14-16= 14+15+21=
38+12+45= 65-5+9= 53+28-28=
65-5+28= 65-38+5= 29+45-14=
19+33-5= 59-35-14= 29+45-14=
49+27-44= 38-15+35= 49+27-44=
.

.
练习十七
49+27-44= 18+62-65= 89-88+23=
68-62+65= 18+62-32= 10+83-81=
50-43+60= 10+34+25= 56+6-28=
57-26+25= 97-86-4= 22+11-5=
42+45-79= 80-66+58= 46-43+76=
61-27+9= 98-18+8= 73+6-50=
41+21-22= 65-55+19= 78-5-13=
89-61+62= 98-57+51= 29+1-13=
87-70+80= 72-12+15= 47+34-73=
28+31-23= 83-50+2= 80-59+71=
.

.
练习十八
14+85-92= 23+17+16= 91-7-62=
42+28+5= 23+37-13= 87-57-21=
55-47+67= 61-12-24= 47+49-86=
15+38+32= 97-46-46= 93-75+57=
51+5+37= 81-73-3= 2+20-5=
77+21-76= 77+21-76= 5+5+74=
22-2+35= 23+44+23= 24+67+7=
1+55+33= 45-14+9= 43+26-53=
88-7-12= 28+16+47= 24+67+7=
9+31-30= 83-58+72= 71+10-51=
.

.
练习十九
68-58-4= 58-49-2= 25+8+17=
27+13+20= 44+24+11= 52+28+9=
90-47-42= 99-53-35= 72-36-25=
50-25-18= 17+33-11= 16+33-22=
17+33-33= 5+37-27= 43+28+28=
43+29-27= 57+17+18= 18+32+11=
85-25-25= 79-38-27= 64-55-5=
47-38-7= 14+24+24= 47+23+11=
34+17+26= 15+37-17= 85-26+25=
14+26-24= 60-22+11= 26+15+15=
.

.
练习二十
78-32-16= 55-28-12= 47-19-14=
18+33+12= 54+28+2= 32+19+8=
48-29-11= 98-33-22= 63-21-32=
69+22-22= 29+34-19= 51-38+19=
35+19+15= 73-29-13= 67-29+23=
53+9+17= 18+53-18= 47+26-27=
93-27+27= 81-19+15= 33+19+17=
65-19+15= 43-23-17= 69-21-19
58+19+12= 34+17+36= 57-19-11=
87-19-27= 53+19+7= 38+15+32=
.

.
练习二十一
88-7-12= 32+43-4= 34-30+59=
36+15-28= 83-58+72= 51-25+34=
30-1-16= 32+66-88= 34-30+59=
75-36+7= 9+54-14= 60+26-2=
30-1-16= 21+59-55= 81-73-3=
2+20-5= 9+54-14= 63-53+58=
5+5+74= 22-2+35= 81-73-3=
59+3-18= 1+55+33= 45-14+9=
5+5+74= 60-24-15= 28+16+47=
24+67+7= 1+55+33= 51+5+37=
.

.
练习二十二
71+10-51= 88-7-12= 28+16+47=
77+21-76= 36+15-28= 83-58+72=
71+10-51= 23+44+23= 32+66-88=
34-30+59= 36+15-28= 43+26-53=
60+26-2= 30-1-16= 32+66-88=
9+31-30= 2+20-5= 9+54-14=
60+26-2= 32+43-4= 22-2+35=
81-73-3= 2+20-5= 51-25+34=
45-14+9= 5+5+74= 22-2+35=
75-36+7= 24+67+7= 50-47+63=
.

.
练习二十三
62-18+15= 24+75-83= 11+70+7=
72+10+15= 1+55+33= 45-14+9=
21+59-55= 88-7-12= 28+16+47=
24+67+7= 63-53+58= 83-58+72=
71+10-51= 21+5+22= 59+3-18=
34-30+59= 36+15-28= 18+76-79=
60-24-15= 30-1-16= 32+66-88=
77-47+47= 93-75+57= 9+54-14=
60+26-2= 37+38+12= 15+5+17=
69+29+1= 32+10+2= 11+72+9=
.

.
练习二十四
27+14+10= 39+44+6= 12+10+21=
88+7+5= 62+22+6= 37+40+17=
81+11+2= 47+5+41= 11+2+34=
82+15+2= 55+21+8= 62+17+13=
33+24+2= 66+11+14= 84-23-4=
71-35-32= 97-46-20= 93-51-37=
78-31-23= 72+19-88= 36-33+21=
63-50+60= 17+20+44= 13+48+20=
79-27-24= 50+2-39= 4+52-26=
23-11+72= 98-89+57= 73+13-12=
.

.
练习二十五
94-88+74= 46-22+46= 98-9-54=
16+7-16= 89-39+33= 89-16-49=
45-32-1= 62+30-63= 69+12-28=
85-67+9= 87-26-5= 94-60-14=
55-44+10= 55-21-26= 7+8+35=
28+35-40= 75-26-40= 10+63-51=
30+19+9= 70-28+44= 35+17-5=
97-15-30= 63-50+60= 86-61+33=
47+45-30= 40+8+34= 50+2-39=
98-38-14= 66-28+60= 63+20+7=
.

.
练习二十六
73+13-12= 58+29-79= 30+68-65=
83+2-37= 16+7-16= 17+20+44=
26+19-25= 87-26-5= 62+30-63=
4+52-26= 98-38-14= 7+8+35=
94-60-14= 94-88+74= 58+29-79=
30+19+9= 28+35-40= 89-39+33=
17+20+44= 63-50+60= 70-28+44=
69+12-28= 4+52-26= 50+2-39=
86-61+33= 55-44+10= 94-88+74=
73+13-12= 36-33+21= 75-26-40=
.

.
练习二十七
89-39+33= 16+7-16= 79-27-24=
35+17-5= 69+12-28= 62+30-63=
98-89+57= 47+45-30= 55-44+10=
94-60-14= 98-9-54= 66-28+60=
75-26-40= 28+35-40= 45-32-1=
30+68-65= 35+17-5= 70-28+44=
87-26-5= 26+19-25= 47+45-30=
86-61+33= 7+8+35= 98-38-14=
66-28+60= 72+19-88= 30+19+9=
58+29-79= 30+68-65= 14+48+2=
.

.
练习二十八
35-23+63= 52-21-25= 29+10+51=
34+30-32= 61+20+5= 18+26+2=
35-23+63= 25-12+54= 80+2-35=
82-67-7= 61+20+5= 67-5-58=
8+63-49= 38+8-32= 80+2-35=
12+63-33= 86-16-47= 44-22+44=
8+63-49= 99-15-12= 46+7-12=
4+13-9= 86-16-47= 42+9+16=
74-68+26= 10+47+18= 46+7-12=
97-51+40= 93-50+56= 69+18-86=
.

.
练习二十九
74-68+26= 85+3-19= 52-21-25=
29+10+51= 93-50+56= 4+85-49=
18+26+2= 35-23+63= 52-21-25=
63-56+17= 82-67-7= 61+20+5=
18+26+2= 73+19-70= 38+8-32=
80+2-35= 82-67-7= 14+48+2=
44-22+44= 8+63-49= 38+8-32=
34+30-32= 4+13-9= 86-16-47=
44-22+44= 25-12+54= 10+47+18=
46+7-12= 4+13-9= 67-5-58=
.

.
练习三十
69+18-86= 74-68+26= 10+47+18=
12+63-33= 29+10+51= 93-50+56
69+18-86= 99-15-12= 35-23+63=
52-21-25= 29+10+51= 42+9+16=
61+20+5= 18+26+2= 46+10+1=
97-51+40= 80+2-35= 82-67-7=
92-32-48= 85+3-19= 8+63-49=
38+8-32= 52-24+13= 4+85-49=
86-16-47= 44-22+44= 16+64+19=
69+18-86= 46+7-12= 4+13-9=
.

.
练习三十一
5+81-69= 29+10+51= 74-68+26=
10+47+18= 37-11-20= 14+48+2=
93-50+56= 69+18-86= 24+43+3=
39+38+12= 41+31-43= 47-40+80=
82-35+3= 64+14-57= 33+53-59=
3+82+4= 47-40+80= 30+19-34=
60+14-73= 67-22-10= 3+82+4=
37+54-43= 99-58+37= 23+64-34=
67-22-10= 56+36-73= 26-19+50=
10+16+13= 23+64-34= 15-7+42=
.

.
练习三十二
49-30+24= 53+9+17= 10+16+13=
3+59-20= 64-63+14= 30+42-18=
53+9+17= 29+3-19= 92-24+28=
27-13+75= 30+42-18= 41+31-43=
58-29+5= 50+25-48= 27-13+75=
33+53-59= 77-11-35= 65-57+38=
50+25-48= 60+14-73= 100-22-8=
12+80-85= 65-57+38= 99-58+37=
20+5+38= 59-23+29= 12+80-85=
26-19+50= 43+16+12= 82-35+3=
.

.
练习三十三
59-23+29= 49-30+24= 76-46+63=
47-40+80= 82-35+3= 64-63+14=
22+69-10= 3+82+4= 47-40+80=
92-24+28= 29+3-19= 67-22-10=
3+82+4= 58-29+5= 41+31-43=
23+64-34= 67-22-10= 77-11-35=
33+53-59= 10+16+13= 23+64-34=
100-22-8= 30+42-18= 53+9+17=
10+16+13= 20+5+38= 27-13+75=
30+42-18= 53+9+17= 43+16+12=
.

.
练习三十四
50+25-48= 27-13+75= 30+42-18=
76-46+63= 65-57+38= 50+25-48=
27-13+75= 53-(47-38)= 30-(22-11)=
13-(2+6)=
44-(16+14)=
53-(38+11)=
76-(69-55)=
4-(1+2)= 47-(2+35)= 6-(3-1)=
20-(19+1)=
76-(25-23)= 81-(37+35)= 34-(61-56)=
.
52-(51-47)=
85-(72+4)=
44-(16-8)=
41-67+55=
50-(6-2)=
25-(11-2)=
11-(4-3)=
27-(18+2)=
14-(87-78)=
29-(68-59)=

.
练习三十五
58-(32+10)= 33-(27+1)= 68-(30+17)=
32-(45-23)=
54-(36-23)=
20-(75-69)=
49-(58-42)=
7-(74-69)=
12-(10-8)=
59-(28-17)=
18-(12+2)=
83-(39-11)= 74-(19+13)= 64-(57-54)=
.
65-(64+1)= 19-(4-2)=
19-(16-4)= 26-(27-23)=
44-(41-34)= 50-(37+9)=
81-(42+7)= 29-(19-6)=
52-(83-42)= 11-(72-68)=
43-(21+10)= 46-(4-3)=
79-(15+33)= 8-(2+1)=
54-(31-16)= 30-(23-7)=

.
练习三十六
91-(88-49)= 78-(61+6)= 92-(46+40)=
78-(4+9)=
46-(2+18)=
76-(18+23)=
84-(22-17)=
30-(17+9)=
19-(6+5)=
14-(8-2)=
22-(51-40)=
20-(6+11)= 19-(9-6)= 83-(65-37)=
.
37-(32-26)=
15-(5+1)=
78-(33+33)=
38-(36-8)=
69-(39-25)=
86-(24+45)=
66-(42-35)=
53-(8-7)=
44-(36-29)=
39-(28-9)=
26-(96-88)=
1-(1+0)=
89-(62+21)=
91-(35-17)=
70-(47-46)=
77-(23-19)=

练习三十七
9-(10-6)=
56-(5-3)=
31-(41-27)=
9-(3-1)=
42-(27-3)=
28-(13+6)=
89-(62+21)=
91-(35-17)=
83-(65-37)=
84-(48+14)= 56-(5-3)= 33-(40-20)=
.
.
43-(15-8)=
47-(7+25)=
93-(83+1)=
60-(35-14)=
14-(8-2)=
22-(41-23)=
20-(6+11)=
9-(10-6)=
84-(48+14)=
86-(65-37)=
21-(4-1)=
71-(30+4)=
67-(35+13)=
77-(43-19)=
86-(24+45)=
19-(9-6)=
43-(15-8)=
33-(40-25)=

练习三十八
86-(65-37)=
21-(4-1)=
71-(30+4)=
65-57+38= 50+25-48= 29+3-19=
59-23+29= 12+80-85= 65-57+38=
39+38+12= 82-35+3= 59-23+29=
12+80-85= 15-4+19= 76-59+55=
76-8-12= 25+16-27= 85-58+36=
73-30-12= 72-59+71= 48+27-1=
93-57-17= 25+16-27= 32+50-36=
.
.
1-(1-1)=
9-(3-1)=
22+69-10=
47-(7+25)=
93-(83+1)=
12+80-85=

.
练习三十九
40+48-17= 13+39+47= 48+27-1=
92-41-1= 68-9+31= 72+10-15=
40+48-17= 19-2-15= 11-3+35=
56+33-50= 68-9+31= 83-42+21=
34-14+8= 21+38-27= 11-3+35=
17+17+47= 12+67+6= 44+49-1=
34-14+8= 95-70+45= 76-8-12=
64-31+31= 12+67+6= 59+10-50=
72-59+71= 89-7-76= 76-8-12=
25+16-27= 32+50-36= 53-48+82=
.

.
练习四十
72-59+71= 48+27-1= 92-41-1=
76-59+55= 32+50-36= 40+48-17=
19-2-15= 73-30-12= 92-41-1=
68-9+31= 83-42+21= 15-4+19=
19-2-15= 11-3+35= 17+17+47=
85-58+36= 83-42+21= 34-14+8=
95-70+45= 93-57-17= 17+17+47=
12+67+6= 59+10-50= 13+39+47=
95-70+45= 76-8-12= 25+16-27=
72+10-15= 59+10-50= 72-59+71=
.

.
练习四十一
48+27-1= 56+33-50= 39+35-40=
32-23+56= 17+48-37= 26+23+11=
12+15+19= 69-32-17= 57+23-62=
57+23-48= 57+23
72-57+48=
23+47-28= 28+24-16= 19+19-24=
22+28+21= 81-32+18= 21+19-8=
39+36-66= 65-39+26= 28+28-28=
34+47-15= 91-19-56= 70-17+38=
18+49+28= 22+49-22= 21-8+39=
.
－72= 72-57+18=
72-48+18= 100-28+35=

.
练习四十二
66-27+19= 38+14+19= 29+27+26=
37-29+16=
100-39-45=
28+19+17= 56+26-39= 67+27-45=
51-22+39= 73-37+38= 29+36-29=
30-13+68=
29+27+26=
100-65=26=
88-66+49= 28+19+17= 56+26-39=
67+27-45= 51-22+39= 73-37+38=
.
45+55-22=
24+47-26=
37-29+16=
85-39+45=
88-66+49=
66-39+47=
45+55-22=
24+47-26=
100-65+26=
100-87+48=

练习四十三
29+36-29=
66-39+47=
75-25+47=
48-19+24= 90-37-28= 5+94-49=
75-38-19= 49+24-65= 39+45-57=
78-50+9= 72-2-30= 35+6-40=
47+9-20= 17+3+15= 75+50+14=
49+9-30= 28+20-2= 99-20+6=
100-30-7= 16+15-7= 70-30+33=
85-6-19= 6+24-30= 75-20-30=
.
.
30-13+68=
25-18+37=
55+19-48=
100-87+48=
100-55+45=
72+69-132=

.
练习四十四
62-5+7= 81-29＋17= 45+27-14=
82-29+36= 48+46-27= 59-33-12=
74-62-10= 71-36-10= 94-54+15=
68-38+7= 32-4-3= 45-22-11=
88-45+28= 89-33-3= 61-44-6=
77-54-14= 74-17-6= 57-33-1=
76-71-3= 91-49-36= 89-60+13=
32-29-1= 84-66-17= 45+24+22=
34+41+17= 98+1+1= 12+31+30=
90+7+1= 77+12+1= 89+1+5=
.

.
练习四十五
25+52+1= 53+12+1= 37+58+2=
17+34+44= 38+52+5= 2+97+1=
43+5+12= 27+63+7= 63+17+19=
72+22+4= 55+9+20= 90+4+5=
27+21-24= 69+16+14= 3+83+13=
67+10+18= 73+23+2= 79+7+6=
14+19+27= 71+17+5= 19+71+8=
30+51-13= 66-33+18= 17+56-38=
5+74-49= 56+40-62= 65-26+20=
62-61+30= 56+41-52= 32+37-3=
.

.
练习四十六
81-35+29= 99-79+6= 80-33+16=
69+30-88= 52+47-87= 49+11-8=
92-33+13= 82+14-86= 42+31-67=
29-13+66= 17+24+45= 95-88+40=
57+4-28= 83-63-10= 15+77+2=
28-19-2= 26+5-1= 58+21+16=
72-68-3= 21+31-14= 66+18+10=
80-13-37= 85-78-3= 16+83-72=
96-34-26= 69-15-14= 83-81-1=
73-70-2= 86-30-10= 98-67-5=
.

.
练习四十七
57-14-10= 35-24-5= 43-28-2=
30-13-12= 72-15-9= 63-33-16=
98-58-32= 87+3+9= 86+12+1=
44+23+29= 63+25+3= 89+4+5=
19+52+27= 46+38+12= 46+28+10=
42+33+7= 43+12+37= 87+4+5=
49+26+20= 99-37+24= 44+55-12=
21+9+50= 68-23+26= 8+89+1=
82+13+3= 41-10-3= 30-27-2=
47-25-17= 74-9-3= 30-22-2=
.

.
练习四十八
70-25-7= 89-52-31= 90-76-6=
87-54-13= 90-85-1= 68-59-7=
33-23-9= 42-28-3= 30-15-5=
70-42+33= 58-30+64= 35-28+2=
43-18+49= 40+58-32= 36+39-6=
21+24-15= 22-14+83= 90-67+57=
33+65-39= 79-33+53= 22-1+63=
64-18+28= 73+10+2= 17-9-6=
91+2+2= 82-69-7= 28-4+23=
79-44-11= 67-33-3= 85+16-8=
.

.
练习四十九
40+34+13= 37+7+34= 75-15+20=
10+11+77= 76-46-22= 17+5+12=
32+51-25= 59-40-18= 76-22+74=
44-2-12= 90+7+2= 22-18-10=
45+24+11= 25+16-27= 32+50-36=
40+48-17= 21+38-27= 48+27-1=
92-41-1= 68-9+31= 44+49-1=
40+48-17= 19-2-15= 11-3+35=
64-31+31= 68-9+31= 83-42+21=
34-14+8= 89-7-76= 11-3+35=
.

.
练习五十
17+17+47= 12+67+6= 53-48+82=
34-14+8= 95-70+45= 76-8-12=
15-4+19= 12+67+6= 59+10-50=
72-59+71= 42-32-6= 43-20-19=
63-20-19= 75-68-4= 36-17-6=
56-18-7= 30-14-8= 91-37-4=
61-51-5= 35-14-5= 93-19-21=
26+15-15= 58-19-21= 89-17+11=
65-12-28= 78-25-25= 24+17+16=
45-17+15= 88-73+12= 75-25+25=
.

.
练习五十一
68-61-5= 78-39-24= 82-61-20=
90-15-29= 61+29-76= 19+77-6=
78-22+27= 60-40+72= 22+50-47=
80+2-70= 80+13-19= 61+26-69=
51+38-84= 98+1-33= 11-7+75=
29+33-52= 22-17+30= 78+19-34=
64+8-19= 4+23+42= 62+30+7=
15+37+10= 17+15+2= 47+36+16=
55+14+27= 40+34+14= 84+2+4=
10+37+45= 22+9+36= 19+42+16=
.

.
练习五十二
67+28+2= 44+40+5= 80+10+9=
50+37+1= 62-18-36= 15-7-5=
17-5-10= 95-85-8= 47-26-7=
82-65-9= 40-14-14= 84-13-33=
78-54-10= 79-71-7= 18-1-12=
22-13-3= 19-11-3= 44-12-10=
80-10-69= 55+38-33= 35-6+38=
91-21+26= 87-86+16= 80-20+30=
14-4+22= 46-19+29= 85-69+70=
80-21+33= 42+5-2= 10-4+16=
.

.
练习五十三
85-28+27= 17+45-24= 57+1-2=
89-82+64= 21-19+71= 99+30+5=
53( )-48-7=4 34-1-( )=6 73-50-( )=1
46-( )-12=32 43-8-( )=11 38+56-( )=13
98-31+( )=97 19+15-( )=5 ( )+30-4=44
80+7+9= 18+49+20= 6+36+57=
45+5+4= 35+54+9= 27+65+7=
39+2+40= 38+21+14= 71+4+13=
54+14+12= 27+46+3= 83+1+4=
64+5+2= 71+22+6= 9+68+11=
.

.
练习五十四
86-62-11= 80-47-25= 9-2-4=
45-24-4= 75-16-47= 37-17-18=
41-14-14= 27-10-5= 72-6-19=
43-24-17= 97-93-3= 65-52-4=
51-24-14= 38-19-7= 42-28-13=
82+17-46= 6+29-25= 93-68+41=
38+34-53= 30+35-33= 34-24+48=
67-23+20= 86+2-31= 92+6-28=
13-8+8= 52-47+49= 56-35+76=
77+11-79= 36+38-63= 38+36-56=
.

.
练习五十五
( )-32+61=71 23+14+( )=85 50+36+( )=97
21+( )+16=94 ( )+77+11=89 19+( )+47=68
94-( )-7=85 73-69-( )=1 ( )-34-16=13
36-( )-7=7 ( )-9-6=60 ( )+5-65=35
23+14-( )=16 ( )+12-13=62 18-( )+62=68
( )+77-24=54 6+66+22= 26+24+27=
20+73+3= 31+57+6= 14+36+37=
57+40+1= 18+45+15= 43+35+11=
68+5+2= 78+7+12= 82+11+6=
90+5+4= 12+54+13= 20+53+24=
.

.
练习五十六
13+3+4= 82-28-33= 31-6-12=
23-10-6= 14-2-11= 57-39-4=
93-26-33= 18-9-6= 43-20-13=
68-61-5= 78-39-24= 82-61-20=
90-15-29= 61+29-76= 19+77-6=
78-22+27= 60-40+72= 22+50-47=
80+2-70= 80+13-19= 61+26-69=
51+38-84= 98+1-33= 11-7+75=
29+33-52= 22-17+30= 78+19-34=
64+8-19= 33+( )+26=72 81+( )+2=100
.

.
练习五十七
16+( )+2=89 86+3+( )=95 63+15+( )=90
33-( )-2=21 ( )-12-70=9 36-( )-22=12
63-9-( )=2 20-2-( )=16 ( )+31-17=54
2-1+( )=38 16+( )-51=36 20-2+( )=55
10+( )-5=11 62+30+7= 15+37+10=
17+15+2= 47+36+16= 55+14+27=
40+34+14= 84+2+4= 10+37+45=
22+9+36= 19+42+16= 67+28+2=
44+40+5= 80+10+9= 50+37+1=
62-18-36= 15-7-5= 17-5-10=
.

.
练习五十八
95-85-8= 47-26-7= 82-65-9=
40-14-14= 84-13-33= 78-54-10=
79-71-7= 18-1-12= 22-13-3=
19-11-3= 44-12-10= 80-10-69=
55+38-33= 35-6+38= 91-21+26=
87-86+16= 80-20+30= 14-4+22=
46-19+29= 85-69+70= 80-21+33=
42+5-2= 10-4+16= 85-28+27=
17+45-24= 57+1-2= 89-82+64=
( )+9=68 96+( )=97 98+( )=100
.

.
练习五十九
57+( )=97 21+( )=28 ( )-48=11
96-( )=70 98-( )=67 57-( )=52
81-( )=74 ( )+9+29=97 34+50+( )=98
73+3+( )=93 21+( )+71=99 ( )+30+5=53
( )-48-7=4 34-1-( )=6 6+66+22=
26+24+27= 20+73+3= 31+57+6=
14+36+37= 57+40+1= 18+45+15=
43+35+11= 68+5+2= 78+7+12=
82+11+6= 90+5+4= 12+57+13=
20+53+24= 13+3+4= 82-28-33=
.

.
练习六十
6-4-1= 26-12-3= 20-13-3=
31-6-12= 23-10-6= 14-2-11=
57-39-4= 93-26-33= 18-9-6=
43-20-13= 68-61-5= 78-39-24=
82-61-20= 90-15-29= 61+29-76=
19+77-6= 78-22+27= 60-40+72=
22+50-47= 80+2-70= 80+13-19=
61+26-69= 51+38-84= 98+1-33=
11-7+75= 29+33-52= 15+37+10=
17+15+2= 47+36+16= 55+14+27=
.

.

.

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