问题 解答题

①4.6×0.45

②2.4×0.76

③5.5×2.4

④7.06×2.3.

答案

①4.6×0.45=2.07;

0.45
×4.6

.
270

180
2.070

②2.4×0.76=1.824;

0.76
×2.4

.
304

152
1.824

③5.5×2.4=13.2;

5.5
×2.4

.
220

110
13.20

④7.06×2.3=16.238.

7.06
×2.3

.
2118

1412
16.238

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