100道简便运算带答案简单例题彩色英文_「金点文库网」分享知识创造价值

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100道简便运算带答案简单例题
1、34×3.535-3.5×34.34
=34×3.5×1.01-3.5×34×1.01
=0
2、8+89+899+8999+89999
=9+90+900+9000+90000-5
=99999-5
=99994
3、0.67×2.1+0.018×21+8.5×0.79
=0.67×2.1+0.18×2.1+8.5×0.79
=（0.67+0.18）×2.1+8.5×0.79
=0.85×2.1+0.85×7.9
=0.85×（2.1+7.9）
=0.85×10
=8.5
4、22222.2×9.99999
=22222.2×（10-0.00001）
=222222-0.222222
=222221.777778
5、1997×19961996-1996×19971997
=1997×1996×10001-1996×1997×10001

=0
6、0.02+0.04+0.06+0.08+……+19.94+19.96+19.98
=（0.02+19.98）×999÷2
=10×999
=9990
7、99999×77778+33333×66666
=99999×77778+99999×22222
=99999×（77778+22222）
=99999×100000
=9999900000
8、（4又56-3又34）（314+27）
=1312÷12
=136
=2又16
9、（4.81又45+3又12+7又13）*49
=（2又23+7又13+3.5）*49
=（10+3.5）*49
=13.5*49
=6
10、17.2【（3又25-1.25）*23】
=17.2【2.15*23】
=17.2÷433

=1.2
11、5*5又15
=5*5+5*15
=25+1
=26
12、（5又25-1.8）[（1.15+1320）*1又23]
=3.6[1.8*53]
=3.63
=1.2
13、3又58*5又15+5又15*6又38
=5.2*(3又58+6又38）
=5.2*10
=52
14、[34-78(56+45)]*28
=[34-78÷4930]*28
=[34-1528]*28
=34*28-1528*28
=21-15
=6
15、(1.25*45-0.76)(1又38+1又140）
=(1-0.76)2.4
=0.242.4

=0.1
16、[(0.2+13)*4.5](8又120-6.45）
=815*4.51.6
=2.41.6
=1.5
17、8.16-1.260.3*1.5
=8.16-4.2*1.5
=8.16-6.3
=1.86
18、8.4*[(1.2+3又13）3.4-12]
=8.4*[68163.4-12]
=8.4*[54-12]
=8.4*34
=6.3
19、19.38-4又78-5又18
=1.938-(4又78+5又18）
=19.38-10
=9.38
20、13又713-（6又35+3又713）
=13又713-3又713-6又35
=10-6又35
=3.4

21、1又34+[2又314-（2又314-1.875）]2又112
=1又34-158*1225
=1又34-910
=0.85
22、（9.4-8又25）[（1.1+115）*1又718]
=1[76*2518]
=1÷175108
=108175
23、10÷3.14-6.86÷3.14 =(10-6.86)÷3.14 =3.14÷3.14 =1
24、37.68÷0.25÷4 =37.68÷(0.25×4) =37.68÷1 =37.68
25、3.75－(2.75－1.3) =3.75－2.75＋1.3 =1＋1.3 =2.3
26、37.56－(18＋7.56) =37.56－7.56－18 =30－18 =12 0.77÷14
=0.77÷7÷2 =0.11÷2 =0.055 4.5×9.8
=4.5×(10－0.2) =4.5×10－4.5×0.2 =45－0.9 =44.1 0.7÷0.125
=(0.7×8)÷(0.125×8) =0.56÷1 =0.56 0.7÷0.25
=(0.7×4)÷(0.25×4) =2.8÷1 =2.8
27、2.5×3.2×12.5 =(2.5×0.4)×(8×12.5) =1×100 =100
28、12.5×9.6×0.25
=(12.5×0.8)×3×(4×0.25) =10×3×1 =30
29、3.75－(2.8－1.25) =3.75＋1.25－2.8
=5－2.8 =2.2
30、37.65÷0.4÷0.25 3.125÷8÷0.125 37.65－4.75－3.25 25×6.4

×12.5 =25×4×0.2×8×12.5 3.6×0.25 =(4－0.4)×0.25
31、56+31+24=(56+24)+31=80+31=111
32、615+475+125 =615+(475+125)=615+600=12153、125*64
=125*8*8=1000*8=800033、25X2237+1537X27
=(5X22+3X27)*(537)
=(110+81)*(537)
=(191)*(537)
=95
34、53774X825+13X1625
=(74+13X2)*(825)
=(74+26)*(825)
=(100)*(825)
=32
35、(15又1920)X(116)
=(16-120)X(116)
=1-1320
=319320
36、18(79)+0.65X(813)-27X18+(513)X0.65
=18*97-2X187+0.65X813+5X0.6513
=(9-2)X187+(8+5)X0.6513=18+0.65
=18.65516×99+516
=516*(99+1)

=516*100
=54*25
=1254
=31.25