小学一年级数学口算题大全(1000多道)上课讲义
送给母亲的话-描写秋天的文章
一、口算题(每天20道口算题,必须认真完成、书写认真):
50+12=
72+4=
94-74=
75-23=
33+20=
71+4=
94-73=
75-33=
50+13=
50+2=
72+6=
94-24=
74-23=
38+20=
72+4=
94-63=
75-23=
50+12=
73+5=
75+3=
51+12=
70+4=
94-70=
75-20=
33+21=
71+14=
94-70=
75-32=
51+13=
51+2=
71+6=
95-24=
75-23=
39+20=
73+4=
95-63=
76-23=
16+30=
40+60=
63-42=
56+23=
42+25=
40+61=
63-52=
56+33=
17+30=
15+30=
40+50=
63-22=
53+23=
42+26=
40+67=
63-22=
56+23=
14+30=
23+30=
78-7=
16+31=
41+60=
63-40=
56+20=
42+20=
41+61=
63-50=
56+32=
17+31=
15+31=
41+50=
64-22=
54+23=
43+26=
41+67=
64-22=
57+23=
32+45=
83-20=
90-20=
32+14=
50+11=
82-20=
90-30=
33+14=
32+46=
33+45=
87-20=
90-10=
42+14=
50+18=
84-20=
90-80=
35+14=
32+47=
50+21=
98-6=
30+45=
83-21=
90-21=
30+14=
51+11=
82-21=
92-32=
33+12=
32+45=
30+45=
84-20=
91-10=
43+14=
51+18=
85-20=
91-80=
36+14=
7+61=
46-11=
58-8=
77-23=
30+15=
45-11=
59-8=
76-23=
6+61=
5+61=
36-11=
38-8=
75-23=
30+19=
47-11=
59-4=
76-53=
16+61=
40+37=
92+5=
70+61=
46-10=
58-18=
77-20=
31+15=
45-10=
59-30=
76-22=
6+60=
15+61=
34-11=
39-8=
76-23=
31+18=
48-11=
59-5=
77-53=
24+60=
26-4=
68-5=
31+17=
31+45=
25-4=
67-5=
32+17=
25+60=
29+60=
26-2=
28-5=
31+14=
31+46=
28-4=
67-3=
32+16=
27+60=
70+11=
71+6=
24+61=
26-14=
68-15=
31+10=
31+40=
25-14=
67-15=
32+13=
25+61=
28+61=
23-2=
29-5=
32+14=
32+46=
29-4=
68-3=
33+16=
51+12=
74+5=
76+3=
61+12=
80+4=
84-70=
95-20=
43+21=
81+14=
84-70=
85-32=
61+13=
61+2=
81+6=
85-24=
85-23=
49+20=
83+4=
85-63=
86-23=
61+12=
84+5=
86+3=
52+12=
79+4=
95-70=
76-20=
34+21=
72+14=
95-70=
76-32=
52+13=
52+2=
78+6=
96-24=
76-23=
38+20=
74+4=
95-63=
15+30=
24+30=
79-7=
26+31=
51+60=
53-40=
66+20=
52+20=
51+61=
53-50=
46+32=
27+31=
25+31=
51+50=
74-22=
64+23=
53+26=
31+67=
54-22=
67+23=
25+30=
34+30=
69-7=
17+31=
42+60=
67-40=
55+20=
43+20=
42+61=
64-50=
57+32=
18+31=
16+31=
42+50=
65-22=
55+23=
44+26=
42+67=
65-22=
33+47=
51+21=
99-6=
40+45=
93-21=
80-21=
40+14=
61+11=
92-21=
82-32=
43+12=
42+45=
40+45=
94-20=
81-10=
53+14=
61+18=
95-20=
81-80=
46+14=
43+47=
61+21=
89-6=
32+45=
85-21=
91-21=
31+14=
52+11=
83-21=
94-32=
35+12=
33+45=
34+45=
85-20=
92-10=
44+14=
52+18=
86-20=
92-80=
17+61=
41+37=
93+5=
80+61=
56-10=
68-18=
87-20=
41+15=
55-10=
69-30=
86-22=
6+70=
25+61=
44-11=
49-8=
86-23=
41+18=
58-11=
69-5=
87-53=
27+61=
51+37=
83+5=
71+61=
47-10=
57-18=
76-20=
32+15=
46-10=
58-30=
77-22=
6+67=
16+61=
37-11=
38-8=
75-23=
32+18=
49-11=
58-5=
28+60=
71+11=
72+6=
34+61=
36-14=
78-15=
41+10=
51+40=
35-14=
77-15=
42+13=
35+61=
38+61=
33-2=
39-5=
42+14=
42+46=
39-4=
78-3=
43+16=
38+60=
81+11=
82+6=
25+61=
27-14=
69-15=
32+10=
32+40=
26-14=
68-15=
33+13=
26+61=
29+61=
24-2=
28-5=
33+14=
34+46=
28-4=
69-3=
77-23= 58+23= 35+14= 78-53=
34+16=
52+12= 16+30= 34+47= 18+61= 29+60=
75+5= 25+30= 52+21= 42+37= 72+11=
77+3= 78-7= 98-6= 94+5= 72+6=
12+6= 29-7= 33+2=
3+40= 15+4=
23+5= 37+1=
29-3= 38-3= 15-4=
18-2=
30+8= 43+1= 86+2=
70+3=
30-2= 72-2= 66-4=
39-2= 20-9=
53+5=
35+2= 39-4= 8+50=
20-1=
40+6= 62+7= 89-5=
63+3= 34-2=
50-4=
32+4=
18-4=
36+3=
11+9=
25+7=
56+20=
32+6=
43+5=
81-2=
48-9=
40-2=
50-8=
75-9=
47-8=
80-2=
72-2=
40-2=
35+5=
64+6=
60-4=
25+4=
88-4=
56+20=
32+6=
43+5=
81-2=
48-9=
40-2=
11+2=
53
26-5=
66+10=
58+30=
80-3=
62-2=
64+6=
29-7= 35
87+10=
60+8= 39
47-8=
27-9=
63-9=
92-3=
26-7=
36-9= 78
45-9=
86
46-9= 43
85+2=
32+7=
11+20=
45
36-5= 84
76+0=
93
64+6=
29-7= 35
87+10=
3 9
60+8= 39
47-8=
27-9=
-3=
84+4=
35
83-3= 71
28-7=
95-4=
83+5=
65+3=
+2=
3 9-3=
+10=
52-4=
32-4=
37-8=
42-7=
52-3=
-4=
-8=
-4=
59-4=
49-5=
-3=
+4=
-3=
65+3=
+2=
-3=
+10=
52-4=
32-4=
60+8=
-10=
+5=
87-10=
64+3=
83+10=
15-3=
7 3+4=
48-30=
76+10=
43-8=
41-2=
56-20=
71-6=
69-10=
65-8=
96-2=
18-2=
78+10= 82
63+3=
30+8=
52-3=
18+5=
15-3=
7 3+4=
48-30=
76+10=
43-8=
41-2=
80-7=
71+9=
60-5=
80-6=
98-4=
10+8=
30-3=
25+4=
95-40=
70+30=
68-9=
38-9=
88-9=
58-10=
63-5=
99-9=
24-9=
38-8=
-5=
84-2=
60-7=
71+9=
70-5=
30-3=
25+4=
95-40=
70+30=
68-9=
38-9=
30-2= 72-2= 66-4=
39-2= 20-9=
53+5= 35+2=
39-4= 8+50= 20-1=
40+6=
62+7= 89-5= 63+3= 34-2=
50-4= 11+2= 53-3=
60+8= 80-7=
32+4= 26-5=
84+4= 35-10= 71+9=
12+6= 29-7= 33+2=
3+40= 15+4=
23+5= 37+1=
29-3= 38-3= 15-4=
18-2=
30+8= 43+1= 86+2= 70+3=
30-2= 72-2= 66-4=
39-2= 20-9=
53+5= 35+2=
39-4= 8+50= 20-1=
12+6=
23+5=
18-2=
30-2=
53+5=
40+6=
50-4=
32+4=
18-4=
36+3=
11+9=
25+7=
56+20=
32+6=
43+5=
81-2=
48-9=
40-2=
50-8=
75-9=
47-8=
80-2=
72-2=
40-2=
35+5=
85
64+6=
60-4=
25+4=
88-4=
29-7=
37+1=
30+8=
72-2=
35+2=
62+7=
11+2=
26-5=
66+10=
58+30=
80-3=
62-2=
64+6=
29-7=
87+10=
60+8=
47-8=
27-9=
63-9=
92-3=
26-7=
36-9=
45-9=
46-9=
+2=
32+7=
11+20=
36-5=
76+0=
33+2=
29-3=
43+1=
66-4=
39-4=
89-5=
53-3=
84+4=
83-3=
28-7=
95-4=
83+5=
65+3=
35+2=
3 9-3=
39+10=
52-4=
32-4=
37-8=
42-7=
52-3=
78-4=
86-8=
43-4=
59-4=
49-5=
45-3=
84+4=
93-3=
3+40=
38-3=
86+2=
39-2=
8+50=
63+3=
60+8=
35-10= 71
71+5=
87-10=
64+3=
83+10=
15-3=
7 3+4=
48-30=
76+10=
43-8=
41-2=
56-20=
71-6=
69-10=
65-8=
96-2=
18-2=
78+10=
63+3=
30+8=
52-3=
18+5=
15+4=
15-4=
70+3=
20-9=
20-1=
34-2=
80-7=
+9=
60-5=
80-6=
-4=
10+8=
30-3=
25+4=
95-40=
70+30=
68-9=
38-9=
88-9=
58-10=
63-5=
99-9=
24-9=
38-8=
82-5=
84-2=
60-7=
71+9=
70-5=
98
56+20= 64+6= 65+3=
15-3= 30-3=
32+6= 29-7=
35+2= 7 3+4= 25+4=
43+5= 87+10= 3 9-3=
48-30= 95-40=
81-2= 60+8=
39+10= 76+10= 70+30=
48-9=
47-8= 52-4= 43-8=
68-9=
40-2= 27-9= 32-4=
41-2= 38-9=
30-2= 72-2=
66-4= 39-2= 20-9=
53+5=
35+2= 39-4= 8+50=
20-1=
40+6= 62+7= 89-5=
63+3= 34-2=
50-4= 11+2=
53-3= 60+8= 80-7=
32+4=
12+6=
23+5=
18-2=
30-2=
53+5=
72-2=
40-2=
35+5=
64+6=
60-4=
25+4=
88-4=
56+20=
12+6=
23+5=
18-2=
30-2=
53+5=
40+6=
50-4=
32+4=
18-4=
6+40=
58-50=
63-30=
23-6=
72-60=
26-5=
29-7=
37+1=
30+8=
72-2=
35+2=
45-9=
46-9=
85+2=
32+7=
11+20=
36-5=
76+0=
64+6=
29-7= 33
37+1=
29
30+8= 43
72-2=
35+2=
62+7=
11+2=
26-5=
66+10=
45-5=
37+5=
42-2=
20+80=
68-8=
84+4=
33+2=
29-3=
43+1=
66-4=
39-4=
86-8=
43-4=
59-4=
49-5=
45-3=
84+4=
93-3=
65+3=
+2= 3
-3=
+1= 86
66-4=
39-4=
89-5=
53-3=
84+4= 35
83-3= 71
6+56=
23-20=
4+90=
51+8=
90-70=
35-10=
3+40=
38-3=
86+2=
39-2=
8+50=
96-2=
18-2=
78+10=
63+3=
30+8=
52-3=
18+5=
15-3=
+40=
38-3=
+2=
39-2=
8+50=
63+3=
60+8=
-10=
+5=
30+9=
67-60=
20+67=
37-7=
7+50=
71+9=
15+4=
15-4=
70+3=
20-9=
20-1=
24-9=
38-8=
82-5=
84-2=
60-7=
71+9=
70-5=
30-3=
15+4=
15-4=
70+3=
20-9=
20-1=
34-2=
80-7=
71+9=
60-5=
29+6=
40+9=
56+10=
57+30=
20+23=
50+28=
52-50= 18+30= 86-40= 40+47=
58-3= 50+38= 5+43= 68-5=
25+40=
96-90= 48+8= 58-8=
55-3= 52+30=
47-7= 66-20=
70-7= 77-9= 32+3=
90-40=
61+5= 60+30= 55-8= 7+33=
86-20= 86-40= 49+3= 56+3=
22+50=
25+20= 7+42= 17+50=
30+20= 100-30=
6+30= 88-60=
7+40= 94-6= 38+4=
100-70=
34+4= 74-70= 28+6= 7+64=
11+9= 80-3= 95-4=
64+3= 98-4=
25+7= 62-2=
83+5= 83+10= 10+8=
56+20=
32+6=
43+5=
81-2=
48-9=
40-2=
50-8=
75-9=
47-8=
80-2=
72-2=
40-2=
35+5=
64+6=
60-4=
25+4=
88-4=
56+20=
12+6=
23+5=
18-2=
30-2=
53+5=
40+6=
50-4=
32+4=
18-4=
36+3=
32+6=
64+6=
29-7=
87+10=
60+8=
47-8=
27-9=
63-9=
92-3=
26-7=
36-9=
45-9=
46-9=
85+2=
32+7=
11+20=
36-5=
76+0=
64+6=
29-7=
37+1=
30+8=
72-2=
35+2=
62+7=
11+2=
26-5=
66+10=
58+30=
29-7=
65+3=
35+2=
3 9-3=
39+10=
52-4=
32-4=
37-8=
42-7=
52-3=
78-4=
86-8=
43-4=
59-4=
49-5=
45-3=
84+4=
93-3=
65+3=
33+2= 3
29-3= 38
43+1=
66-4=
39-4=
89-5=
53-3=
84+4=
83-3=
28-7=
35+2=
15-3= 30-3=
7 3+4=
25+4=
48-30= 95-40=
76+10=
70+30=
43-8= 68-9=
41-2=
38-9=
56-20= 88-9=
71-6=
58-10=
69-10= 63-5=
65-8=
99-9=
96-2= 24-9=
18-2=
38-8=
78+10= 82-5=
63+3=
84-2=
30+8= 60-7=
52-3= 71+9=
18+5= 70-5=
15-3= 30-3=
+40= 15+4=
-3= 15-4=
86+2= 70+3=
39-2= 20-9=
8+50= 20-1=
63+3= 34-2=
60+8= 80-7=
35-10=
71+9=
71+5= 60-5=
87-10=
80-6=
7 3+4= 25+4=
30-2= 72-2=
66-4= 39-2= 20-9=
53+5=
35+2= 39-4= 8+50= 20-1=
40+6= 62+7= 89-5=
63+3= 34-2=
50-4= 11+2=
53-3= 60+8= 80-7=
32+4= 26-5= 84+4=
35-10= 71+9=
12+6= 29-7=
33+2= 3+40= 15+4=
43+5=
87+10= 3 9-3= 48-30=
95-40=
81-2= 60+8= 39+10=
76+10= 70+30=
48-9= 47-8=
52-4= 43-8= 68-9=
40-2=
27-9= 32-4= 41-2=
38-9=
23+5=
18-2=
30-2=
53+5=
45+30=
52+6=
71+5=
44+3=
3+95=
30+65=
56-3=
29-4=
38-4=
25-4=
49-7=
99-50=
45-20=
63-30=
95-4=
20+80=
85-2=
65-5-50=
70-30+5=
6+32-30=
25-20+71=
32-2+58=
72-2=
40-2=
35+5= 85
64+6=
37+1=
30+8=
72-2=
35+2=
45+3=
40+47=
45+30=
5+32=
30+65=
6+22=
89-40=
77-7=
98-3=
78-40=
26-3=
30-1=
76-40=
95-5=
70+28=
65+30=
58-30=
80-20+6=
60+4+20=
46-6+60=
54+3-5=
75-40-3=
45-9=
-9=
+2=
32+7=
29-3=
38-3= 15-4=
43+1= 86+2=
70+3=
66-4= 39-2= 20-9=
39-4= 8+50= 20-1=
5+41=
50+41= 6+32=
62+4= 27+40=
5+23=
69+1= 6+33= 18+70=
25+4= 20+35= 4+75=
53+20= 85+3= 4+52=
16+3= 40+58= 56-30=
89-4= 75-30= 56-3=
29-20=
56-4= 63-50=
96-30= 39-6=
27-5=
80-30= 79-60= 67-3=
59-3= 46+30= 51+7=
55-2=
93-80= 4+74=
46-30= 38+40=
2+82=
86+10= 69+0= 73-40=
6+98= 19-6= 59-4=
92-50=
13+5= 36-3=
58+30= 36-30=
5+34=
64+80= 53+70=
12+5+50=
75-70+9= 80-20+15= 50+34=
78-8+29= 30+50+12= 39-8=
46+6+20= 90-50+42= 59-6=
22-20+50= 36+20-20= 39-7=
86-8=
96-2= 24-9=
43-4= 18-2=
38-8=
59-4= 78+10= 82-5=
49-5= 63+3= 84-2=
46
60-4= 11+20= 45-3=
30+8= 60-7=
25+4= 36-5=
84+4= 52-3= 71+9=
88-4=
76+0= 93-3= 18+5=
70-5=
56+20= 64+6= 65+3=
15-3= 30-3=
12+6= 29-7=
33+2= 3+40= 15+4=
23+5=
37+1= 29-3= 38-3=
15-4=
18-2= 30+8= 43+1=
86+2= 70+3=
30-2= 72-2=
66-4= 39-2= 20-9=
53+5=
35+2= 39-4= 8+50=
20-1=
40+6= 62+7= 89-5=
63+3= 34-2=
50-4=
32+4=
18-4=
6+40=
58-50=
63-30=
23-6=
72-60=
50+28=
58-3=
96-90=
47-7=
90-40=
86-20=
25+20=
6+30=
100-70=
11+9=
25+7=
56+20=
32+6=
43+5=
81-2=
48-9=
40-2=
50-8=
75-9=
47-8=
80-2=
11+2=
26-5=
66+10=
45-5=
37+5=
42-2=
20+80=
68-8=
52-50=
50+38=
48+8=
66-20=
61+5=
86-40=
7+42=
88-60=
34+4=
80-3=
62-2=
64+6=
29-7=
87+10=
60+8=
47-8=
27-9=
63-9=
92-3=
26-7=
36-9=
53-3=
84+4=
83-3=
6+56=
23-20=
4+90=
51+8=
90-70=
18+30=
5+43=
58-8=
70-7=
60+30=
49+3=
17+50=
7+40=
74-70=
95-4=
83+5=
65+3=
35+2=
3 9-3=
39+10=
52-4=
32-4=
37-8=
42-7=
52-3=
78-4=
60+8= 80-7=
35-10= 71+9=
71+5= 60-5=
30+9= 29+6=
67-60= 40+9=
20+67= 56+10=
37-7=
57+30=
7+50= 20+23=
86-40=
40+47=
68-5= 25+40=
55-3=
52+30=
77-9= 32+3=
55-8=
7+33=
56+3= 22+50=
30+20=
100-30=
94-6= 38+4=
28+6=
7+64=
64+3= 98-4=
83+10=
10+8=
15-3= 30-3=
7 3+4=
25+4=
48-30= 95-40=
76+10=
70+30=
43-8= 68-9=
41-2=
38-9=
56-20= 88-9=
71-6=
58-10=
69-10= 63-5=
65-8=
99-9=
72-2= 45-9=
86-8= 96-2= 24-9=
40-2=
46-9= 43-4= 18-2=
38-8=
35+5= 85+2= 59-4=
78+10= 82-5=
64+6= 32+7=
49-5= 63+3= 84-2=
60-4=
11+20= 45-3= 30+8= 60-7=
25+4= 36-5= 84+4=
52-3= 71+9=
88-4= 76+0=
93-3= 18+5= 70-5=
56+20=
64+6= 65+3= 15-3= 30-3=
12+6= 29-7= 33+2=
3+40= 15+4=
23+5= 37+1=
29-3= 38-3= 15-4=
18-2=
30-2=
53+5=
40+6=
50-4=
32+4=
18-4=
36+3=
32+6=
43+5=
81-2=
48-9=
40-2=
30-2=
53+5=
40+6=
50-4=
32+4=
12+6=
23+5=
18-2=
30-2=
53+5=
16+9=
48+8=
19+8=
62+8=
16+9=
61+9=
23+7=
30+8= 43+1=
72-2=
66-4=
35+2= 39-4=
62+7= 89-5=
11+2=
53-3=
26-5= 84+4=
66+10= 83-3=
58+30=
28-7=
29-7= 35+2=
87+10= 3 9-3=
60+8=
39+10=
47-8= 52-4=
27-9= 32-4=
72-2=
66-4=
35+2= 39-4=
62+7= 89-5=
11+2=
53-3=
26-5= 84+4=
29-7= 33+2=
37+1=
29-3=
30+8= 43+1=
72-2= 66-4=
35+2=
39-4=
5+18= 17+3= 36+6=
29+5=
35+8= 4+19= 7+26=
29+7= 7+38= 9+18=
75+5= 23+7= 26+8=
24+6= 5+37= 44+7=
85+4= 91+8= 82+5=
37+4= 78+3= 27+6=
86+2= 70+3=
39-2= 20-9=
8+50= 20-1=
63+3= 34-2=
60+8= 80-7=
35-10=
71+9=
71+5= 60-5=
87-10=
80-6=
7 3+4= 25+4=
48-30=
95-40=
76+10= 70+30=
43-8=
68-9=
41-2= 38-9=
39-2= 20-9=
8+50= 20-1=
63+3= 34-2=
60+8= 80-7=
35-10= 71+9=
3+40= 15+4=
38-3= 15-4=
86+2= 70+3=
39-2= 20-9=
8+50= 20-1=
87+9=
4+37=
29+4=
40+6= 35+30=
19+60=
32+8=
67+9= 50+8=
39+1=
46+7=
39+8= 68+5=
9+25= 85+6= 92+4=
86+2= 48+7= 39+9=
2+38= 56+8= 36+5= 35+6=
46+9= 9+25=
23+8= 46+6=
90+9= 84+7= 34+7= 56+3=
12+9= 93+3= 58+3=
75+7= 35+6= 86+8=
39+2=
27+4= 50+5= 34+9= 10+60=
9+50=
10+40= 61+10= 18+5=
74+6= 37+2= 26+5=
23+7=
47+4= 88+3= 47+6= 39+8=
68+5=
26+8= 19+6= 28+5=
53+6= 78+5= 37+9=
23+8=
89+6= 75+5= 86+6= 68+7=
87+9=
26+9= 25+6= 50+37=
49+7= 87+9= 50+8=
61+9=
73+7=
9+25=
16+9=
48+8=
39+8=
32+8=
16+9=
39+2=
10+40=
23+70=
26+8=
83+8=
83+70=
36+8=
45+30=
52+6=
71+5=
44+3=
3+95=
30+65= 6+22=
56-3=
29-4=
49-7=
99-50=
4+74=
63-30=
69+0=
95-4=
85+4= 91+8=
82+5= 39+10= 46+7=
37+4=
78+3= 27+60= 39+8= 68+5=
35+6= 2+40= 86+2= 48+7=
39+10=
5+18= 17+3= 36+6=
29+5= 87+9=
35+8= 4+19=
7+26= 4+37= 29+4=
26+7=
7+38= 6+18= 40+6= 35+30=
25+5= 13+7= 86+8= 19+60=
32+8=
34+6= 5+37= 14+7=
37+9= 57+8=
27+4= 50+5=
54+9= 70+60= 39+50=
6+10=
18+50= 74+6= 37+2= 26+50=
47+4= 88+3= 47+6= 99+1=
68+5=
19+60= 48+50= 23+6=
78+50= 87+9=
19+6= 75+5=
36+6= 18+7= 47+9=
67+40=
88+3= 47+6= 39+8= 68+5=
19+6= 28+50= 53+6= 78+5=
17+9=
45+3= 5+41= 50+41=
6+32=
40+47= 62+4= 27+40=
5+23=
45+30= 69+1= 6+33=
18+70=
5+32= 25+4= 20+35=
4+75=
30+65= 53+20= 85+3=
4+52=
16+3= 40+58= 56-30=
89-40= 89-4= 75-30=
56-3=
77-7= 29-20= 56-4=
63-50=
26-3= 59-3= 67-3= 46+30=
30-1= 55-2= 27-5= 46-30=
51+7= 38+40= 93-80= 76-40=
95-5= 86+10= 2+82= 45-20=
73-40= 100-30= 59-4= 36-30=
70+28= 6+98= 19-6= 5+34=
20+80= 65+30=
92-50= 13+5= 50+34=
85-2=
58-30= 58+30= 36-3= 12+5+50=
65-5-50= 80-20+6= 64+80=
53+70=
70-30+5= 60+4+20=
75-70+9= 80-20+15=
6+32-30=
46-6+60= 78-8+29= 30+50+12=
25-20+71= 54+3-5= 46+6+20=
90-50+42=
32-2+58= 75-40-3=
22-20+50= 36+20-20=