Question

25分之6除以9+25分之6乘以9分之8的简便计算

Answer 1

25分之6除以9+25分之6乘以9分之8
=25分之6×9分之1+25分之6乘以9分之8
=25分之6×（9分之1+9分之8）
=25分之6乘以1
=25分之6

13.7×0.5-3.7÷2
=13.7×0.5-3.7×0.5
=（13.7-3.7）×0.5
=10×0.5
=5

8.49+（4.64-2.14）×0.64
=8.49+2.5×0.64
=8.49+2.5×0.4×1.6
=8.49+1.6
=10.09

11/8-（5/12-1/4）+5/8
=（11/8+5/8）-1/6
=2-1/6
=1又5/6

19/20+（6/5-7/40）-7/10
=（19/20-7/40）+（6/5-7/10）
=31/40+1/2
=1又11/40

Answer 2

25分之6乘以括号9分之1加9分之8
等于25分之6乘以1
等于25分之6

Answer 3

6/25÷9+6/25×8/9

=6/25×1/9+6/25×8/9
=6/25×(1/9+8/9)
=6/25×1
=6/25