脱式计算.4.7×3.8-14
答案:1 悬赏:0 手机版
解决时间 2021-03-05 06:48
- 提问者网友:听门外雪花风
- 2021-03-05 03:33
脱式计算.4.7×3.8-14
最佳答案
- 五星知识达人网友:第四晚心情
- 2021-03-05 03:46
(1)4.7×3.8-14.56
=17.86-14.56
=3.3;
(2)7.25-3.86-2.14
=7.25-(3.86+2.14)
=7.25-6
=1.25;
(3)6.73×5.8+4.2×6.73
=6.73×(5.8+4.2)
=6.73×10
=67.3
(4)4.9÷[2.6-(12.78-10.88)]
=4.9÷[2.6-1.9]
=4.9÷0.7
=7
=17.86-14.56
=3.3;
(2)7.25-3.86-2.14
=7.25-(3.86+2.14)
=7.25-6
=1.25;
(3)6.73×5.8+4.2×6.73
=6.73×(5.8+4.2)
=6.73×10
=67.3
(4)4.9÷[2.6-(12.78-10.88)]
=4.9÷[2.6-1.9]
=4.9÷0.7
=7
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