简便计算54.9×0.384.05 37.851.25×0.7×0.89.8×256.1×3
答案:2 悬赏:50 手机版
解决时间 2021-03-22 12:30
- 提问者网友：焚苦与心
- 2021-03-21 12:36
简便计算54.9×0.384.05 37.851.25×0.7×0.89.8×256.1×3
最佳答案
- 五星知识达人网友：何以畏孤独
- 2021-03-21 13:52
简便计算54.9×0.384.05 37.851.25×0.7×0.89.8×256.1×3
54.9×0.384.05 37.851.25×0.7×0.89.8×256.1×3
54.9×0.3+84.05+ 37.85+1.25×0.7×0.8+9.8×2+56.1×3
=5.5×3-0.1×0.3+121.9+1.25×0.8×0.7+10×2-0.2×2+168.3
=16.5-0.03+121.9+0.7+20-0.4+168.3
=16.5+20+121.9+168.3+0.7-0.4-0.03
=36.5+121.9+169-0.43
=158.4+168.57
=326.97
54.9×0.384.05 37.851.25×0.7×0.89.8×256.1×3
54.9×0.3+84.05+ 37.85+1.25×0.7×0.8+9.8×2+56.1×3
=5.5×3-0.1×0.3+121.9+1.25×0.8×0.7+10×2-0.2×2+168.3
=16.5-0.03+121.9+0.7+20-0.4+168.3
=16.5+20+121.9+168.3+0.7-0.4-0.03
=36.5+121.9+169-0.43
=158.4+168.57
=326.97
全部回答
- 1楼网友：过活
- 2021-03-21 14:19
54.9x0.38
=（55-0.1）×0.38
=55×0.38-0.1×0.38
=20.9-0.038
=20.862
4.05+37.85=41.9
1.25×0.8×0.7
=1×0.7
=0.7
9.8×25=245
6.1×3.6+3.6×3.9
=（6.1+3.9）×3.6
=10×3.6
=36
=（55-0.1）×0.38
=55×0.38-0.1×0.38
=20.9-0.038
=20.862
4.05+37.85=41.9
1.25×0.8×0.7
=1×0.7
=0.7
9.8×25=245
6.1×3.6+3.6×3.9
=（6.1+3.9）×3.6
=10×3.6
=36
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