题目内容
用合适的方法计算下列各题.
| 1÷(
|
| ||||||||||||
| 36×(3-
|
(1)
×
×51,
=
×51×
,
=18×
,
=9;
(2)1÷(
÷
),
=1÷
,
=
;
(3)
×17+
×17,
=(
+
)×17,
=1×17,
=17;
(4)
×
÷
,
=
×
,
=
;
(5)36×(3-
),
=36×3-36×
,
=108-8,
=100.
| 6 |
| 17 |
| 1 |
| 2 |
=
| 6 |
| 17 |
| 1 |
| 2 |
=18×
| 1 |
| 2 |
=9;
(2)1÷(
| 1 |
| 4 |
| 1 |
| 5 |
=1÷
| 5 |
| 4 |
=
| 4 |
| 5 |
(3)
| 5 |
| 8 |
| 3 |
| 8 |
=(
| 5 |
| 8 |
| 3 |
| 8 |
=1×17,
=17;
(4)
| 4 |
| 7 |
| 7 |
| 12 |
| 4 |
| 9 |
=
| 1 |
| 3 |
| 9 |
| 4 |
=
| 3 |
| 4 |
(5)36×(3-
| 2 |
| 9 |
=36×3-36×
| 2 |
| 9 |
=108-8,
=100.
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