题目内容
计算下列各题,能简算的要简算.
(1-
| 30×(
|
|
|
(1)(1-
)×
÷
,
=
×
÷
,
=
×
×
=
×(
×
),
=
×
,
=
;
(2)30×(
+
+
),
=30×
+30×
+30×
,
=2+24+10,
=36;
(3)
×
+
÷4,
=
×
+
×
,
=
×(
+
),
=
×1,
=
;
(4)
÷0.375×
,
=
×
×
,
=
×
,
=
.
| 14 |
| 15 |
| 4 |
| 9 |
| 5 |
| 18 |
=
| 1 |
| 15 |
| 4 |
| 9 |
| 5 |
| 18 |
=
| 1 |
| 15 |
| 4 |
| 9 |
| 18 |
| 5 |
=
| 1 |
| 15 |
| 4 |
| 9 |
| 18 |
| 5 |
=
| 1 |
| 15 |
| 8 |
| 5 |
=
| 8 |
| 75 |
(2)30×(
| 1 |
| 15 |
| 4 |
| 5 |
| 1 |
| 3 |
=30×
| 1 |
| 15 |
| 4 |
| 5 |
| 1 |
| 3 |
=2+24+10,
=36;
(3)
| 1 |
| 4 |
| 3 |
| 5 |
| 2 |
| 5 |
=
| 1 |
| 4 |
| 3 |
| 5 |
| 2 |
| 5 |
| 1 |
| 4 |
=
| 1 |
| 4 |
| 3 |
| 5 |
| 2 |
| 5 |
=
| 1 |
| 4 |
=
| 1 |
| 4 |
(4)
| 3 |
| 16 |
| 4 |
| 5 |
=
| 3 |
| 16 |
| 8 |
| 3 |
| 4 |
| 5 |
=
| 1 |
| 2 |
| 4 |
| 5 |
=
| 2 |
| 5 |
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