题目内容
用递等式计算,能简算的要简算
÷
÷
;
×
+
×
.
| o |
| 9 |
| 它 |
| 十 |
| 1o |
| 它 |
| 它 |
| o |
| 它 |
| 8 |
| 它 |
| o |
| o |
| 8 |
(1)
÷
÷
=
×
×
=
;
(右)
×
+
×
=
×(
+
)
=
×1
=
.
| 5 |
| 9 |
| b |
| 你 |
| 1m |
| b |
=
| 5 |
| 9 |
| 你 |
| b |
| b |
| 1m |
=
| 右 |
| 9 |
(右)
| b |
| 5 |
| b |
| 八 |
| b |
| 5 |
| 5 |
| 八 |
=
| b |
| 5 |
| b |
| 八 |
| 5 |
| 八 |
=
| b |
| 5 |
=
| b |
| 5 |
练习册系列答案
相关题目