题目内容
| 计算下面各题.(能简算的要简算) 10-
| (
|
| (
| ||||||||||||||||||||||||
| 5×
|
| 16×
|
(1)10-
×
,
=10-
,
=9
;
(2)(
+
)×
,
=
×
,
=
;
(3)
×
×
=
;
(4)(
+
)×24,
=
×24+
×24,
=6+3,
=9;
(6)5×
+
×2,
=
+
,
=4
;
(7)
×
+
×
,
=
×(
+
),
=
×5,
=14;
(8)16×
×(9×
),
=16×
×9×
,
=48.
| 2 |
| 3 |
| 9 |
| 10 |
=10-
| 3 |
| 5 |
=9
| 2 |
| 5 |
(2)(
| 1 |
| 9 |
| 1 |
| 6 |
| 8 |
| 25 |
=
| 5 |
| 18 |
| 8 |
| 25 |
=
| 4 |
| 45 |
(3)
| 5 |
| 9 |
| 6 |
| 25 |
| 3 |
| 8 |
| 1 |
| 20 |
(4)(
| 1 |
| 4 |
| 1 |
| 8 |
=
| 1 |
| 4 |
| 1 |
| 8 |
=6+3,
=9;
(5)
|
| 5 |
| 7 |
| 2 |
| 7 |
=
| 25 |
| 7 |
| 4 |
| 7 |
=4
| 1 |
| 7 |
(7)
| 14 |
| 5 |
| 3 |
| 2 |
| 14 |
| 5 |
| 7 |
| 2 |
=
| 14 |
| 5 |
| 3 |
| 2 |
| 7 |
| 2 |
=
| 14 |
| 5 |
=14;
(8)16×
| 2 |
| 3 |
| 1 |
| 2 |
=16×
| 2 |
| 3 |
| 1 |
| 2 |
=48.
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