题目内容
用递等式计算,能简便计算的要简便计算.
×
×
×32+32×
(
+
-
)×24
3÷
-
÷3.
| 5 |
| 6 |
| 12 |
| 21 |
| 7 |
| 15 |
| 7 |
| 16 |
| 9 |
| 16 |
(
| 2 |
| 3 |
| 7 |
| 8 |
| 5 |
| 6 |
3÷
| 3 |
| 4 |
| 3 |
| 4 |
(1)
| 5 |
| 6 |
| 12 |
| 21 |
| 7 |
| 15 |
=
| 5 |
| 6 |
| 12 |
| 21 |
| 7 |
| 15 |
=
| 5 |
| 6 |
| 4 |
| 15 |
=
| 2 |
| 9 |
(2)
| 7 |
| 16 |
| 9 |
| 16 |
=(
| 7 |
| 16 |
| 9 |
| 16 |
=1×32,
=32;
(3)(
| 2 |
| 3 |
| 7 |
| 8 |
| 5 |
| 6 |
=
| 2 |
| 3 |
| 7 |
| 8 |
| 5 |
| 6 |
=16+21-20,
=37-20,
=17;
(4)3÷
| 3 |
| 4 |
| 3 |
| 4 |
=4-
| 1 |
| 4 |
=3
| 3 |
| 4 |
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