题目内容
计算(写出过程)
(1)
| (2)38÷
| (3)
| (4)
|
(1)
÷
,
=
×
,
=
;
(2)38÷
,
=38×
,
=
;
(3)
÷
,
=
×
,
=
;
(4)
÷13,
=
×
,
=
.
| 2 |
| 7 |
| 9 |
| 14 |
=
| 2 |
| 7 |
| 14 |
| 9 |
=
| 4 |
| 9 |
(2)38÷
| 8 |
| 9 |
=38×
| 9 |
| 8 |
=
| 171 |
| 4 |
(3)
| 6 |
| 25 |
| 3 |
| 10 |
=
| 6 |
| 25 |
| 10 |
| 3 |
=
| 4 |
| 5 |
(4)
| 39 |
| 70 |
=
| 39 |
| 70 |
| 1 |
| 13 |
=
| 3 |
| 70 |
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