来自万颖瑜的问题
【计算下面各题.28.92+15.4-8.9285.5-(25.4-9.8)50-(4.75+6.86)8.6+5.85-6.34.】
计算下面各题.
28.92+15.4-8.92
85.5-(25.4-9.8)
50-(4.75+6.86)
8.6+5.85-6.34.
1回答
2020-04-07 13:47
【计算下面各题.28.92+15.4-8.9285.5-(25.4-9.8)50-(4.75+6.86)8.6+5.85-6.34.】
计算下面各题.
28.92+15.4-8.92
85.5-(25.4-9.8)
50-(4.75+6.86)
8.6+5.85-6.34.
(1)28.92+15.4-8.92
=28.92-8.92+15.4
=20+15.4
=35.4
(2)85.5-(25.4-9.8)
=85.5-15.6
=69.9
(3)50-(4.75+6.86)
=50-11.61
=38.39
(4)8.6+5.85-6.34
=14.45-6.34
=8.11