Question

简便计算:

17/20×2/3+17/20 ×1/3-1/2

计算：
8/35×5/32+3/35×27/32
下面是的不是简便计算，就是计算
8/35×5/32+5/35×27/32

Answer 1

17/20×2/3+17/20 ×1/3-1/2 8/35×5/32+3/35×27/32
=17/20×(2/3+1/3)-10/20 =1/7×1/4+1/7×27/32 (这一步是约分得来的）
=17/20-10/20 =1/7×8/32+1/7×27/32
=7/20 =1/7×(8/32+27/32)
=5/32

Answer 2

17/20×2/3+17/20 ×1/3-1/2
=17/20×（2/3+1/3）-1/2
=17/20×1-1/2
=17/20-10/20
=7/20

8/35×5/32+3/35×27/32
=（8×5）/（35×32）+（3×27）/（35×32）
=40/1120+81/1120
=121/1120

8/35×5/32+5/35×27/32
=（8×5）/（35×32）+（5×27）/（35×32）
=40/1120+135/1120
=175/1120
=5/32

Answer 3

17/20 × 2/3+17/20 ×1/3-1/2
= 17/20 * ( 2/3 + 1/3 ) - 1/2
= 17/20 - 10/20
= 7/20

8/35 × 5/32 + 3/35 × 27/32
=（8 * 5 + 3 * 27 ）/（35 * 32）
= 121/1120

Answer 4

17/20×2/3+17/20 ×1/3-1/2
=17/20(2/3+1/3)-1/2
=17/20-10/20
=7/20
8/35×5/32+3/35×27/32
=40/1120+81/1120
=121/1120