题目内容
简便计算.(要写出主要简便过程)
×
+
×
×
+
÷4
×
+
÷10.
| 11 |
| 13 |
| 3 |
| 8 |
| 5 |
| 8 |
| 11 |
| 13 |
| 1 |
| 4 |
| 3 |
| 7 |
| 4 |
| 7 |
| 17 |
| 18 |
| 9 |
| 10 |
| 17 |
| 18 |
(1)
×
+
×
=(
+
)×
=1×
=
;
(2)
×
+
÷4
=
×
+
×
=
×(
+
)
=
×1
=
;
(3)
×
+
÷10
=
×
+
×
=
×(
+
)
=
×1
=
.
| 11 |
| 13 |
| 3 |
| 8 |
| 5 |
| 8 |
| 11 |
| 13 |
=(
| 3 |
| 8 |
| 5 |
| 8 |
| 11 |
| 13 |
=1×
| 11 |
| 13 |
=
| 11 |
| 13 |
(2)
| 1 |
| 4 |
| 3 |
| 7 |
| 4 |
| 7 |
=
| 1 |
| 4 |
| 3 |
| 7 |
| 4 |
| 7 |
| 1 |
| 4 |
=
| 1 |
| 4 |
| 3 |
| 7 |
| 4 |
| 7 |
=
| 1 |
| 4 |
=
| 1 |
| 4 |
(3)
| 17 |
| 18 |
| 9 |
| 10 |
| 17 |
| 18 |
=
| 17 |
| 18 |
| 9 |
| 10 |
| 17 |
| 18 |
| 1 |
| 10 |
=
| 17 |
| 18 |
| 9 |
| 10 |
| 1 |
| 10 |
=
| 17 |
| 18 |
=
| 17 |
| 18 |
练习册系列答案
相关题目