题目内容
脱式计算
[11.4-(9.1×
+1.2)]÷1
+1÷0.25
4
÷[2
-(
×1
+0.4)]-1.75.
[11.4-(9.1×
| 6 |
| 7 |
| 3 |
| 5 |
4
| 1 |
| 2 |
| 2 |
| 5 |
| 3 |
| 4 |
| 1 |
| 3 |
(1)[11.4-(9.1×
+1.2)]÷1
+1÷0.25,
=[11.4-(7.8+1.2)]÷1
+1÷0.25,
=[11.4-9]÷1
+1÷0.25
=2.4÷1
+1÷0.25,
=1.5+4,
=5.5;
(2)4
÷[2
-(
×1
+0.4)]-1.75,
=4
÷[2
-(1+0.4)]-1.75,
=4
÷[2
-1.4]-1.75,
=4
÷1-1.75,
=4.5-1.75,
=2.75.
| 6 |
| 7 |
| 3 |
| 5 |
=[11.4-(7.8+1.2)]÷1
| 3 |
| 5 |
=[11.4-9]÷1
| 3 |
| 5 |
=2.4÷1
| 3 |
| 5 |
=1.5+4,
=5.5;
(2)4
| 1 |
| 2 |
| 2 |
| 5 |
| 3 |
| 4 |
| 1 |
| 3 |
=4
| 1 |
| 2 |
| 2 |
| 5 |
=4
| 1 |
| 2 |
| 2 |
| 5 |
=4
| 1 |
| 2 |
=4.5-1.75,
=2.75.
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