| 100-54.28-25.72 | 11
| 87×54+87×46 | 0.25×64×1.25. |
=100-(54.28+25.72),
=100-80,
=20;
(2)11
| 3 |
| 7 |
| 9 |
| 11 |
| 4 |
| 7 |
| 2 |
| 11 |
=(11
| 3 |
| 7 |
| 4 |
| 7 |
| 2 |
| 11 |
| 9 |
| 11 |
=15+7,
=22;
(3)87×54+87×46,
=87×(54+46),
=87×100,
=8700;
(4)0.25×64×1.25,
=0.25×(8×8)×1.25,
=(0.25×8)×(8×1.25),
=2×10,
=20.
编辑:chaxungu时间:2026-04-27 13:18:50分类:小学数学题库
| 100-54.28-25.72 | 11
| 87×54+87×46 | 0.25×64×1.25. |
| 3 |
| 7 |
| 9 |
| 11 |
| 4 |
| 7 |
| 2 |
| 11 |
| 3 |
| 7 |
| 4 |
| 7 |
| 2 |
| 11 |
| 9 |
| 11 |