问题
解答题
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答案
①3.48×0.05=0.174,
3.48
,×0.05 0.174
②3.06×45=137.7,
3.06
×45 1530
,1224 137.70
③8.45÷0.65=13,
13
0.658.45
65 195
,195 0
验证:0.65
×13 195
,65 8.45
④0.9×1.07=0.963,
1.0 7
,×0.9 0.963
⑤6.21÷0.03=207,
207
0.036.21
6 21
,21 0
⑥19.76÷5.2=3.8,
3.8
5.219.76
156 416
,416 0
验算:3.8
×5.2 76
.190 19.76