题目内容
计算下列各题.(能简算的要简算)
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510÷[42×(
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(1)
| 17 |
| 24 |
| 3 |
| 4 |
| 17 |
| 24 |
=
| 17 |
| 24 |
| 3 |
| 4 |
| 17 |
| 24 |
| 1 |
| 4 |
=
| 17 |
| 24 |
| 3 |
| 4 |
| 1 |
| 4 |
=
| 17 |
| 24 |
=
| 17 |
| 24 |
(2)
| 1 |
| 2 |
=0.5×3.2+5.6×0.5+1.2×0.5,
=0.5×(3.2+5.6+1.2),
=0.5×10,
=5;
(3)510÷[42×(
| 5 |
| 6 |
| 3 |
| 7 |
=510÷[42×
| 5 |
| 6 |
| 3 |
| 7 |
=510÷[35-18],
=510÷17,
=30;
(4)
| 15 |
| 16 |
| 7 |
| 16 |
| 1 |
| 4 |
| 1 |
| 2 |
=
| 15 |
| 16 |
| 3 |
| 16 |
| 1 |
| 2 |
=
| 15 |
| 16 |
| 3 |
| 8 |
=
| 21 |
| 16 |
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