题目内容
列式或方程计算:
(1)
与
差的
,再除
,商是多少?
(2)12加上一个数的
,和是18.这个数多少?
(3)8除
的商再乘以
得多少?
(1)
| 5 |
| 12 |
| 1 |
| 4 |
| 4 |
| 5 |
| 2 |
| 3 |
(2)12加上一个数的
| 2 |
| 5 |
(3)8除
| 2 |
| 9 |
| 4 |
| 9 |
(1)
÷[(
-
)×
],
=
÷[
×
],
=
÷
,
=
×
,
=5;
答:商是5.
(2)(18-12)÷
,
=6×
,
=15;
答:这个数是15.
(3)
÷8×
,
=
×
×
,
=
;
答:8除
的商再乘以
得
.
| 2 |
| 3 |
| 5 |
| 12 |
| 1 |
| 4 |
| 4 |
| 5 |
=
| 2 |
| 3 |
| 1 |
| 6 |
| 4 |
| 5 |
=
| 2 |
| 3 |
| 2 |
| 15 |
=
| 2 |
| 3 |
| 15 |
| 2 |
=5;
答:商是5.
(2)(18-12)÷
| 2 |
| 5 |
=6×
| 5 |
| 2 |
=15;
答:这个数是15.
(3)
| 2 |
| 9 |
| 4 |
| 9 |
=
| 2 |
| 9 |
| 1 |
| 8 |
| 4 |
| 9 |
=
| 1 |
| 81 |
答:8除
| 2 |
| 9 |
| 4 |
| 9 |
| 1 |
| 81 |
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