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下面各题能简算的要简算.45-(57-12)=14-37+(34-47)=11-710-310=78-49+18=49+23+59-13=1116-(516+38)=
题目详情
下面各题能简算的要简算.
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▼优质解答
答案和解析
(1)
-(
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=
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=
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+
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=
;
(2)
-
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=
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=1-1,
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(3)11-
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=11-1,
=10;
(4)
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| 4 |
| 5 |
| 5 |
| 7 |
| 1 |
| 2 |
=
| 4 |
| 5 |
| 5 |
| 7 |
| 1 |
| 2 |
=
| 56 |
| 70 |
| 50 |
| 70 |
| 35 |
| 70 |
=
| 41 |
| 70 |
(2)
| 1 |
| 4 |
| 3 |
| 7 |
| 3 |
| 4 |
| 4 |
| 7 |
=
| 1 |
| 4 |
| 3 |
| 7 |
| 3 |
| 4 |
| 4 |
| 7 |
=(
| 1 |
| 4 |
| 3 |
| 4 |
| 3 |
| 7 |
| 4 |
| 7 |
=1-1,
=0;
(3)11-
| 7 |
| 10 |
| 3 |
| 10 |
=11-(
| 7 |
| 10 |
| 3 |
| 10 |
=11-1,
=10;
(4)
| 7 |
| 8 |
| 4 |
| 9 |
| 1 |
| 8 |
=(
| 7 |
| 8 |
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