脱式计算(用你自己喜欢的方法)①1.12+1.79+8.88+0.21 ...
答案:1 悬赏:80 手机版
解决时间 2021-11-12 18:38
- 提问者网友:龅牙恐龙妹
- 2021-11-12 15:47
脱式计算(用你自己喜欢的方法)①1.12+1.79+8.88+0.21 ...
最佳答案
- 五星知识达人网友:duile
- 2021-11-12 17:18
(1)1.12+1.79+8.88+0.21,
=(1.12+8.88)+(1.79+0.21),
=10+2,
=12;
(2)73.2-16.3-3.7
=73.2-(16.3+3.7),
=73.2-20,
=53.2;
(3)99×3.6+3.6,
=(99+1)×3.6,
=100×3.6,
=360;
(4)7.9×0.8×0.125
=7.9×(0.8×0.125),
=7.9×0.1,
=0.79;
(5)4×8.8×0.25,
=4×0.25×8.8,
=1×8.8,
=8.8;
(6)0.36×101,
=0.36×(100+1),
=0.36×100+0.36×1,
=36+0.36,
=36.36.
=(1.12+8.88)+(1.79+0.21),
=10+2,
=12;
(2)73.2-16.3-3.7
=73.2-(16.3+3.7),
=73.2-20,
=53.2;
(3)99×3.6+3.6,
=(99+1)×3.6,
=100×3.6,
=360;
(4)7.9×0.8×0.125
=7.9×(0.8×0.125),
=7.9×0.1,
=0.79;
(5)4×8.8×0.25,
=4×0.25×8.8,
=1×8.8,
=8.8;
(6)0.36×101,
=0.36×(100+1),
=0.36×100+0.36×1,
=36+0.36,
=36.36.
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