题目内容
列式计算.
(1)数
与2.5的积,减去8
除5.8的商,差是多少?
(2)一个数的2.5倍比125的
少12,求这个数.
(1)数
| 7 |
| 15 |
| 2 |
| 7 |
(2)一个数的2.5倍比125的
| 5 |
| 8 |
(1)
×2.5-5.8÷8
,
=
×
-
×
,
=
-
,
=
.
答:差是
.
(2)(125×
-12)÷2.5,
=(78.125-12)÷2.5,
=66.125÷2.5,
=26.45.
答:这个数是26.45.
| 7 |
| 15 |
| 2 |
| 7 |
=
| 7 |
| 15 |
| 5 |
| 2 |
| 29 |
| 5 |
| 7 |
| 58 |
=
| 7 |
| 6 |
| 7 |
| 10 |
=
| 7 |
| 15 |
答:差是
| 7 |
| 15 |
(2)(125×
| 5 |
| 8 |
=(78.125-12)÷2.5,
=66.125÷2.5,
=26.45.
答:这个数是26.45.
练习册系列答案
相关题目