怎样简便怎样计算 ① 1.8×[﹙4.6＋2.4﹚÷0.35] ②0.36×98＋3.6×0.2
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解决时间 2021-03-05 06:50
- 提问者网友：寂寞撕碎了回忆
- 2021-03-05 00:03
怎样简便怎样计算 ① 1.8×[﹙4.6＋2.4﹚÷0.35] ②0.36×98＋3.6×0.2
最佳答案
- 五星知识达人网友：由着我着迷
- 2021-03-05 01:38
① 1.8×[﹙4.6＋2.4﹚÷0.35]
= 1.8 x 7 /0.35
= 1.8 x 700/35
= 1.8 x 20
= 36
②0.36×98＋3.6×0.2
= 3.6 x 9.8 +3.6x0.2
=3.6 x (9.8+0.2)
=3.6 x 10
=36
③﹙11分之3×100分之87﹢100分之73×11分之3﹚÷3％
= 3/11 x (87%+73%) / 3%
= 3/11 x 160% /3%
= 3/11 x 160/3
= 160 /11
= 1.8 x 7 /0.35
= 1.8 x 700/35
= 1.8 x 20
= 36
②0.36×98＋3.6×0.2
= 3.6 x 9.8 +3.6x0.2
=3.6 x (9.8+0.2)
=3.6 x 10
=36
③﹙11分之3×100分之87﹢100分之73×11分之3﹚÷3％
= 3/11 x (87%+73%) / 3%
= 3/11 x 160% /3%
= 3/11 x 160/3
= 160 /11
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