题目内容
用简便方法计算.
| 78500÷14= | 900×14= |
(1)78500÷14,
=78500÷2÷7,
=39250÷7,
=5607.
4285
;
(2)900×14,
=900×(2×7),
=(900×2)×7,
=1800×7,
=12600.
=78500÷2÷7,
=39250÷7,
=5607.
| . |
| 1 |
| . |
| 7 |
(2)900×14,
=900×(2×7),
=(900×2)×7,
=1800×7,
=12600.
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