题目内容
2.1÷1.7×5.1÷159.1×3.7÷0.7.
2.1÷1.7×5.1÷159.1×3.7÷0.7,
=(2.1÷0.7)×(5.1÷1.7)÷(159.1÷3.7),
=3×3÷43,
=9÷43,
=
.
=(2.1÷0.7)×(5.1÷1.7)÷(159.1÷3.7),
=3×3÷43,
=9÷43,
=
| 9 |
| 43 |
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| ①1 | ②5 |
| ③87 | ④1 |
题目内容
| 9 |
| 43 |
| ①1 | ②5 |
| ③87 | ④1 |