题目内容
正确、合理、灵活的计算下面各题.
(
| 0.25×32×1.25 |
| ||||||||||||
2
|
|
(1)(
+
-
)×1.2,
=
×1.2+
×1.2-
×1.2,
=0.6+0.4-1,
=1-1,
=0;
(2)0.25×32×1.25,
=(0.25×4)×(8×1.25),
=1×10,
=10;
(3)
×7.5+(1-
)÷
,
=
×7.5+
÷
,
=(7.5+
)×
,
=10×
,
=2;
(4)2
×1.25+1
×2.4-125%,
=(2
+2.4-1)×1
,
=4×1
,
=5;
(5)
×(
-
)÷
,
=
×
÷
,
=
÷
,
=1
.
| 1 |
| 2 |
| 1 |
| 3 |
| 5 |
| 6 |
=
| 1 |
| 2 |
| 1 |
| 3 |
| 5 |
| 6 |
=0.6+0.4-1,
=1-1,
=0;
(2)0.25×32×1.25,
=(0.25×4)×(8×1.25),
=1×10,
=10;
(3)
| 1 |
| 5 |
| 4 |
| 5 |
| 2 |
| 5 |
=
| 1 |
| 5 |
| 1 |
| 5 |
| 2 |
| 5 |
=(7.5+
| 5 |
| 2 |
| 1 |
| 5 |
=10×
| 1 |
| 5 |
=2;
(4)2
| 3 |
| 5 |
| 1 |
| 4 |
=(2
| 3 |
| 5 |
| 1 |
| 4 |
=4×1
| 1 |
| 4 |
=5;
(5)
| 15 |
| 16 |
| 7 |
| 8 |
| 1 |
| 4 |
| 1 |
| 2 |
=
| 15 |
| 16 |
| 5 |
| 8 |
| 1 |
| 2 |
=
| 75 |
| 128 |
| 1 |
| 2 |
=1
| 11 |
| 64 |
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