题目内容
脱式计算.
| ①302×34-47 | ②456÷3+324 | ③8×(531-276) |
①302×34-47,
=10268-47,
=10221;
②456÷3+324,
=152+324,
=476;
③8×(531-276),
=8×255,
=2040.
=10268-47,
=10221;
②456÷3+324,
=152+324,
=476;
③8×(531-276),
=8×255,
=2040.
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