用简便方法计算.6×915+9.2×425+915(3.75+4.1+2.35)×9.8.
2021-06-15 104次 反馈错误 加入收藏 正确率 : 100%
题目内容:
用简便方法计算.
6×9+9.2×4+9 | (3.75+4.1+2.35)×9.8. |
优质解答
(1)6×9+9.2×4+9,
=(6+4+1)×9.2,
=11.4×9.2,
=104.88;
(2)(3.75+4.1+2.35)×9.8,
=(6.1+4.1)×9.8,
=10.2×9.8,
=10×9.8+0.2×9.8,
=98+1.96,
=99.96.
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