Question

7/6乘以百分之40+2/5×5/6+1/2×0.4,简便怎么算？

Answer 1

根据题意可知道，百分之四十，2/5 和0.4 化简成最简分数都是2/5 所以使用乘法结合律计算就是了：
7/6 x 40% + 2/5 x 5/6 + 1/2 x 0.4
=7/6 x 2/5 + 5/6x2/5 + 2/5 x 3/6
=2/5 x(7/6+5/6+3/6)
=2/5 x 15/6
=2/5 x 5/2
=1

Answer 2

原式 =4.5×0.4+6.5×0.4-0.4 =（4.5+6.5-1）×0.4 =10×0.4 =4 ~一刻永远523为你解答，祝你学习进步~~~ ~如果你认可我的回答，请及时点击

Answer 3

百分之40=0.4=2/5

7/6乘以百分之40+2/5×5/6+1/2×0.4
=7/6 × 2/5 + 5/6 × 2/5 + 1/2× 2/5
=（7/6 + 5/6 + 3/6） × 2/5
=15/6 × 2/5
=30/30
=1

Answer 4

原式=(7/6)×0.4 + 0.4×(5/6) + (1/2)×0.4
=0.4×(7/6 + 5/6 + 1/2)
=0.4×(2 + 0.5)
=0.4×2.5
=1

Answer 5

这是一道简单的数学计算题，计算结果应该是1