简算 19.98x37-199.8x1.9+1998x0.2
答案:5 悬赏:70 手机版
解决时间 2021-03-11 14:12
- 提问者网友：温柔港
- 2021-03-11 09:39
简算 19.98x37-199.8x1.9+1998x0.2
最佳答案
- 五星知识达人网友：未来江山和你
- 2021-03-11 10:09
原式=19.98×(37-10×1.9+100×0.2)=19.98×(37-19+20)=19.98×38=759.24
全部回答
- 1楼网友：撞了怀
- 2021-03-11 12:25
=19.98x37-19.98x19+19.98x20
=19.98x(37-19+20)
=19.98x38
=759.24
=19.98x(37-19+20)
=19.98x38
=759.24
- 2楼网友：街头电车
- 2021-03-11 11:23
19.98x37-199.8x1.9+1998x0.2
=199.8x(3.7-1.9+2)
=3.8×(200-0.2)
=760-0.76
=759.24
=199.8x(3.7-1.9+2)
=3.8×(200-0.2)
=760-0.76
=759.24
- 3楼网友：动情书生
- 2021-03-11 10:48
19.98x37-199.8x1.9+1998x0.2
=1998x0.37-1998x0.19+1998x0.2
=1998x(0.37-0.19+0.2)
=1998x0.2
=399.6
=1998x0.37-1998x0.19+1998x0.2
=1998x(0.37-0.19+0.2)
=1998x0.2
=399.6
- 4楼网友：夜风逐马
- 2021-03-11 10:42
19.98x37-199.8x1.9+1998x0.2
= 19.98×37 - 19.98×19 + 19.98×20
= 19.98×（37 - 19 +20）
= 19.98 ×38
= （20 - 0.02）×38
= 760 - 0.76
= 759.24
= 19.98×37 - 19.98×19 + 19.98×20
= 19.98×（37 - 19 +20）
= 19.98 ×38
= （20 - 0.02）×38
= 760 - 0.76
= 759.24
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