4.8乘2.5脱式计算是什么,能简算的,要简算
答案:2 悬赏:80 手机版
解决时间 2021-03-14 18:45
- 提问者网友:锁深秋
- 2021-03-14 09:37
4.8乘2.5脱式计算是什么,能简算的,要简算
最佳答案
- 五星知识达人网友:掌灯师
- 2021-03-14 10:40
4.8×2.5
=(4.8÷4)×(2.5×4)
=1.2×10
=12
=(4.8÷4)×(2.5×4)
=1.2×10
=12
全部回答
- 1楼网友:封刀令
- 2021-03-14 11:51
(1)2.5×1.37×0.4,
=2.5×0.4×1.37,
=1×1.37,
=1.37;
(2)4.8×0.25,
=1.2×4×0.25,
=1.2×(4×0.25),
=1.2×1,
=1.2;
(3)0.89×4.8+0.89×5.2,
=0.89×(4.8+5.2),
=0.89×10,
=8.9;
(4)101×0.78,
=(100+1)×0.78,
=100×0.78+1×0.78,
=78+0.78,
=78.78;
(5)8.8×1.25,
=1.1×8×1.25,
=1.1×(8×1.25),
=1.1×10,
=11;
(6)4.3×0.8×5,
=4.3×(0.8×5),
=4.3×4,
=17.2.
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