Question

2.5×2.4这道题怎么简便运算

Answer 1

2.5×2.4这道题怎么简便运算

2.5×2.4
=2.5×（4×0.6）
=（2.5×4）×0.6
=10×0.6
=6

0.12720.32这道题怎么简便运算

这道题怎么简便运算
0.125×0.32
=0.125×8×0.04
=1×0.04
=0.04

49102249,这道题怎么简便运算?

这道题怎么简便运算?
49×102-2×49
=49×（102-2）
=49×100
=4900

2918-947 这道题简便运算

2918-1000+53
=1918+53
=1971

347+25-75这道题简便运算怎么算

347+25-75这道题简便运算怎么算
347+25-75
=347-（75-25）
=347-50
=297

3.29-0.38 1.62这道题怎么简便运算

3.29-0.38 1.62怎么简便运算
3.29-0.38 1.62
=3.29+1.62-0.38
=3.29+1.26
=4.56

3.4/0.25这道题怎么简便运算

解答：
3.4/0.25=(3.4*4)/(0.25*4)=13.6/1=13.6

32.47-17.56-2.44这道题怎么简便运算?

32.47-17.56-2.44
=32.47-（17.56+2.44）
=32.47-20
=12.47

4.7×2.8 0.47 28这道题怎么简便运算

解：4.7×2.8-0.47×28
=4.7X2.8-4.7X0.1X28
=4.7X2.8-4.7X2.8
=0

540-172-213这道题怎么简便运算

540-172-213=155
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