题目内容
想一想,填.一填.
(1)
=
=
(2)
=
=
(3)
=
=
.
(1)
| 2 |
| 3 |
| 2×4 |
| 3×() |
| 8 |
| () |
(2)
| 2 |
| 3 |
| 2+4 |
| 3+() |
| 10 |
| () |
(3)
| 2 |
| 3 |
| 2+() |
| 3+27 |
| () |
| 30 |
(1)
=
=
;
(2)
=
=
;
(3)
=
=
.
故答案为:4,12;6,15;18,20.
| 2 |
| 3 |
| 2×4 |
| 3×4 |
| 8 |
| 12 |
(2)
| 2 |
| 3 |
| 2+4 |
| 3+6 |
| 10 |
| 15 |
(3)
| 2 |
| 3 |
| 2+18 |
| 3+27 |
| 20 |
| 30 |
故答案为:4,12;6,15;18,20.
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