| 32.48-12.5-7.5 | 64×
| 2998×9 |
|
=32.48-(12.5+7.5),
=32.48-20,
=12.48;
(2)64×
| 15 |
| 63 |
=(63+1)×
| 15 |
| 63 |
=63×
| 15 |
| 63 |
| 15 |
| 63 |
=15+
| 15 |
| 63 |
=15
| 15 |
| 63 |
(3)2998×9
=×9,
=3000×9-2×9,
=27000-18,
=26982;
(4)
| 5 |
| 11 |
| 3 |
| 4 |
| 6 |
| 11 |
| 4 |
| 3 |
=
| 5 |
| 11 |
| 3 |
| 4 |
| 6 |
| 11 |
| 3 |
| 4 |
=(
| 5 |
| 11 |
| 6 |
| 11 |
| 3 |
| 4 |
=1×
| 3 |
| 4 |
=
| 3 |
| 4 |
编辑:chaxungu时间:2026-04-27 12:34:30分类:小学数学题库
| 32.48-12.5-7.5 | 64×
| 2998×9 |
|
| 15 |
| 63 |
| 15 |
| 63 |
| 15 |
| 63 |
| 15 |
| 63 |
| 15 |
| 63 |
| 15 |
| 63 |
| 5 |
| 11 |
| 3 |
| 4 |
| 6 |
| 11 |
| 4 |
| 3 |
| 5 |
| 11 |
| 3 |
| 4 |
| 6 |
| 11 |
| 3 |
| 4 |
| 5 |
| 11 |
| 6 |
| 11 |
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 4 |