Question

三分之一加四分之一加六分之一括号乘以1.2简便方法计算？

Answer 1

这是运用乘法分配律来进行简便计算的，要注意约分。即:
（1/3+1/4+1/6）ⅹ1.2
=1/3ⅹ1.2+1/4ⅹ1.2+1/6ⅹ1.2
=0.4+0.3+0.2
=0.9

Answer 2

（1/3+1/4+1/6）x1.2
=(1/3+1/4+1/6)x12x0.1
=(12x1/3+12x1/4+12x1/6)x0.1
=(4+3+2)x0.1
=9x0.1
=0.9

Answer 3

(1/3+1/4+1/6)*1.2
=(4/12+3/12+2/12)*1.2
=9/12*1.2
=9/10

Answer 4

（1/3+1/4+1/6）×1.2
=1/3×1.2+1/4×1.2+1/6×1.2
=0.4+0.3+0.2
=0.9

Answer 5

（1/3+1/4+1/6）*1.2
=（1/3+1/4+1/6）*12/10
=4/10+3/10+2/10
=9/10