题目内容
按规律在括号里填上适当的数.
(1)4,1,______,______,
; (2)
,
,
,______,______;
(3)
,
,______,
,______; (4)
,
,
,______,______.
(1)4,1,______,______,
| 1 |
| 64 |
| 1 |
| 4 |
| 4 |
| 9 |
| 7 |
| 16 |
(3)
| 1 |
| 6 |
| 1 |
| 2 |
| 9 |
| 2 |
| 3 |
| 5 |
| 9 |
| 10 |
| 27 |
| 20 |
(1)1÷4=
,
÷4=
;
(2)
=
,
=
;
(3)
×3=
,
×3=
;
(4)
=
,
=
;
故答案为:
,
;
,
;
,
;
,
.
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 16 |
(2)
| 7+3 |
| 5×5 |
| 10 |
| 25 |
| 10+3 |
| 6×6 |
| 13 |
| 36 |
(3)
| 1 |
| 2 |
| 3 |
| 2 |
| 9 |
| 2 |
| 27 |
| 2 |
(4)
| 27×3 |
| 20×2 |
| 81 |
| 40 |
| 81×3 |
| 40×2 |
| 243 |
| 80 |
故答案为:
| 1 |
| 4 |
| 1 |
| 16 |
| 10 |
| 25 |
| 13 |
| 36 |
| 3 |
| 2 |
| 27 |
| 2 |
| 81 |
| 40 |
| 243 |
| 80 |
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