题目内容
计算下面各题,带☆的进行验算.
☆18.5×80=
☆2.47+1.68=
-
=☆
☆60÷
=
8.6÷11=(商用循环小数表示)
5.6÷7.8≈(得数保留两位小数)
☆18.5×80=
☆2.47+1.68=
| 7 |
| 9 |
| 3 |
| 4 |
☆60÷
| 3 |
| 5 |
8.6÷11=(商用循环小数表示)
5.6÷7.8≈(得数保留两位小数)
☆18.5×80=1480;

☆2.47+1.68=4.15;

-
=
-
=
,
验算:
+
=
+
=
=
60÷
=60×
=100,
验算:100×
=60
8.6÷11=0.7
(商用循环小数表示)

5.6÷7.8≈0.72(得数保留两位小数)

☆2.47+1.68=4.15;
| 7 |
| 9 |
| 3 |
| 4 |
| 28 |
| 36 |
| 27 |
| 36 |
| 1 |
| 36 |
验算:
| 1 |
| 36 |
| 3 |
| 4 |
| 1 |
| 36 |
| 27 |
| 36 |
| 28 |
| 36 |
| 7 |
| 9 |
60÷
| 3 |
| 5 |
| 5 |
| 3 |
验算:100×
| 3 |
| 5 |
8.6÷11=0.7
| ? |
| 8 |
| ? |
| 1 |
5.6÷7.8≈0.72(得数保留两位小数)
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