题目内容
估算
X-4.9=6.02
7.89X=23.68
+1.09≈
+
≈
X-4.9=6.02
7.89X=23.68
| 8 |
| 9 |
| 13 |
| 25 |
| 19 |
| 40 |
(1)x-4.9=6.02,
x-5+5=6+5
x=11;
(2)7.89x=23.68,
8x÷8=24÷8,
x=3;
(3)
+1.09=1+1=2;
(4)
+
=0.5+0.5=1.
x-5+5=6+5
x=11;
(2)7.89x=23.68,
8x÷8=24÷8,
x=3;
(3)
| 8 |
| 9 |
(4)
| 13 |
| 25 |
| 19 |
| 40 |
练习册系列答案
相关题目