题目内容
看谁算的对.
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12÷
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分析:(1)运用除法性质解答,
(2)(3)(4)按照从左到右顺序计算即可解答,
(5)按照先算除法,再算减法顺序解答,
(6)运用乘法分配律解答.
(2)(3)(4)按照从左到右顺序计算即可解答,
(5)按照先算除法,再算减法顺序解答,
(6)运用乘法分配律解答.
解答:解:(1)
÷
÷
=
÷(
×
)
=
÷
=
;
(2)
×
×
=
×
=
;
(3)
÷
×
=
×
=
;
(4)12÷
×
=20×
=
;
(5)
-
÷
=
-
=
;
(6)
×
+
÷
=
×(
+
)
=
×
=1
.
| 5 |
| 8 |
| 16 |
| 7 |
| 14 |
| 11 |
=
| 5 |
| 8 |
| 16 |
| 7 |
| 14 |
| 11 |
=
| 5 |
| 8 |
| 32 |
| 11 |
=
| 55 |
| 256 |
(2)
| 3 |
| 8 |
| 5 |
| 6 |
| 24 |
| 35 |
=
| 15 |
| 48 |
| 24 |
| 35 |
=
| 3 |
| 14 |
(3)
| 19 |
| 26 |
| 38 |
| 55 |
| 5 |
| 11 |
=
| 55 |
| 52 |
| 5 |
| 11 |
=
| 25 |
| 52 |
(4)12÷
| 3 |
| 5 |
| 3 |
| 25 |
=20×
| 3 |
| 25 |
=
| 12 |
| 5 |
(5)
| 15 |
| 9 |
| 4 |
| 7 |
| 5 |
| 14 |
=
| 15 |
| 9 |
| 8 |
| 5 |
=
| 1 |
| 15 |
(6)
| 5 |
| 8 |
| 4 |
| 3 |
| 5 |
| 8 |
| 3 |
| 4 |
=
| 5 |
| 8 |
| 4 |
| 3 |
| 4 |
| 3 |
=
| 5 |
| 8 |
| 8 |
| 3 |
=1
| 2 |
| 3 |
点评:(1)运用简便方法解决问题,(2)依据四则运算计算方法正确进行计算,是本题考查知识点.
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