六年级简便运算题目,要过程和答案,急需!!!!!急!!!!

2025-03-04 05:07:30
推荐回答(5个)
回答1:

1125-697=1125-(700-3)=1125-700+3=428
⒉1246+998=1246+(1000-2)=1246+1000-2=2244
⒊901-207=901-(200+7)=901-200-7=694
⒋985+103=985+(100+3)=985+100+3=1088
⒌12.46-(1.5+4.46)=12.46-1.5-4.46=12.46-4.46-1.5=8-1.5=6.5
⒍23.95-(1.5-2.05)=23.95-1.5+2.05=23.95+2.05-1.5=26-1.5=24.5
⒎4.21+(6.29-3.21)=4.21+6.29-3.21=10。5-3.21=7.29
⒏4.8×10.1=4.8×(10+0.1)=4.8×10+4.8×0.1=48+0.48=48.48
⒐4.5×0.99=4.5×(1-0.01)=4.5×1-4。5×0.01=4.5-0.045=4.455
⒑3.4+3.4×99=3.4×(1+99)=3.4×100=340
11.187.7×11-187.7=(187.7×(11-1)=187.7×10=1877
12.12×12/13=(13-1)×13分之12=13×13分之12-1×13分之12=12-13分之12=11又13分之1
13.24×11/23=(23+1)×23分之11=23×23分之11+1×23分之11=11+23分之11=11又23分之11
14.6/5-2/7+4/5-5/7=(5分之6+5分之4)-(7分之2+7分之5)=2-1=1
15.51÷13+14×1/13=51×13分之1+14×13分之1=(51+14)×13分之1=65×13分之1=5
16.7.6*4+1.4÷0.25=7.6×4+1.4×4=(7。6+1.4)×4=9×4=36
17.5.2÷0.25=5.2×4=20.8
18.4.1÷0.125=4.1×8=32.8
19.4.8÷0.125+5.2×8=4.8×8+5.2×8=(4.8+5.2)×8=10×8=80
20.3.75×0.2+6.25÷5=3.75×0.2+6.25×0.2=(3.75+6.25)×0.2=2
21.6.42+1.01-6.42=6.42-6.42+1.01=1.01
22.3.9÷(1.3÷0.6)=3.9÷1.3×0.6=3×0.6=1.8
23.7-1÷8-7×1/8=7-(1+7)×8分之1=7-1=6
24.(7/11-1/17)×11-6/17=11分之7×11-17分之1×11-17分之6=7-(17分之11+17分之6)=6
25.71.32-(5.28÷4+23.9)=71.32-1.32-23.9=70-23.9=46.1
26.(27+9/14)÷9=27×9分之1+14分之9×9分之1=3+14分之1=3又14分之1
27.(5/8+2/27)×8+11/27=8分之5×8+27分之2×8+27分之11=5+(27分之16+27分之11)=6
28.8/9×[3/5-(9/16-2/5)]=9分之8×[5分之3-16分之9+5分之2]=9分之8×16分之7=18分之7
29.7/18×0.5÷7/18×0.5=(18分之7÷18分之7)×(0.5×0.5)=1×0.25=0.25
30.(9.5+3)×(4+0.8)=12.5×4.8=12.5×8×0.6=60
31.2.4×(5.2-2.6)÷0.8=2.4÷0.8×2.6=3×2.6=7。8

回答2:

(11/12+7/18+5/24 )×72 93.5÷3又1/2 ÷ 2/7 16÷2.5
=11/12×72+7/18×72+5/24×72 =93.5÷7/2× 7/2 =16÷5/2
=66+28+15 =93.5 =16×2/5
=109 =32/5
1125-997 998+1246+9989 (8700+870+87)÷87
=1125-1000+3 =1000-2+1246+10000-11 =8700÷87+870÷87+87÷87
=125+3 =11000+1246-13 =100+10+1
=128 =12233 =111
125×8.8 1.3+4.25+3.7+3.75 17.15-(3.5-2.85)
=125×8+125×0.8 =1.3+3.7+(4.25+3.75) =17.15+2.85-3.5
=1000+100 =5+8 =20-3.5
=1100 =13 =16.5

回答3:

4.35+4.25+3.65+3.75 =(4.35+3.65)+(4.25+3.75) =8+8
=16

回答4:

额 还不如剁了兔子的脚······

回答5:

计算题:
x5的平方:例,25*25=2*(2+1)*100+25=625,其他类似。
应用题:
例,鸡兔同笼,10头30脚,问各几何?解1:去兔两脚,则均2脚,30-10*2=10,去掉10脚,即5
兔。(可使兔子抬脚,这样就不惨忍了)2:脚用对数来计算,10头15对脚,则5兔。

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