题目内容
用竖式计算,减法题要验算,除法题得数保留两位小数
①4.05-1.96 | ②0.65×0.48 | ③16÷23. |
(1)4.05-1.96=2.09,
验算:
(2)0.65×0.48=0.312,
(3)16÷23≈0.70
0.695
23
|
. |
2.09 |
验算:
|
. |
1.96 |
(2)0.65×0.48=0.312,
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. | |||||||
|
. |
0.3120 |
(3)16÷23≈0.70
0.695
23
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