题目内容
计算下面各题,能用简便算法的就用简便算法
|
| ||||||||||||
5.58-
|
5÷[(
|
(1)
| 4 |
| 9 |
| 15 |
| 16 |
| 5 |
| 6 |
=
| 5 |
| 12 |
| 5 |
| 6 |
=
| 1 |
| 2 |
(2)
| 9 |
| 20 |
| 1 |
| 20 |
| 1 |
| 6 |
=
| 9 |
| 20 |
| 1 |
| 6 |
| 1 |
| 20 |
| 1 |
| 6 |
=(
| 9 |
| 20 |
| 1 |
| 20 |
| 1 |
| 6 |
=
| 1 |
| 2 |
| 1 |
| 6 |
=
| 1 |
| 12 |
(3)5.58-
| 7 |
| 30 |
| 14 |
| 25 |
| 7 |
| 12 |
=5.58-
| 5 |
| 12 |
| 7 |
| 12 |
=5.58-(
| 5 |
| 12 |
| 7 |
| 12 |
=5.58-1,
=4.58;
(4)5÷[(
| 2 |
| 3 |
| 1 |
| 5 |
| 3 |
| 13 |
=5÷[
| 13 |
| 15 |
| 3 |
| 13 |
=5÷
| 1 |
| 5 |
=25.
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