题目内容
| 计算下面各题,能简算的要简算. (1)64%×7+36%×7 | (2)
| ||||||
(3)8×40%+
| (4)4.15-3.15×10%-
|
(1)64%×7+36%×7,
=(64%+36%)×7,
=1×7,
=7;
(2)
÷(
-60%)÷40%,
=
÷
÷40%,
=10÷40%,
=25;
(3)8×40%+
÷
,
=8×40%+40%×2,
=(8+2)×40%,
=10×40%,
=4;
(4)4.15-3.15×10%-
,
=4.15-0.315-
,
=3.835-
,
=3.21.
=(64%+36%)×7,
=1×7,
=7;
(2)
| 2 |
| 3 |
| 2 |
| 3 |
=
| 2 |
| 3 |
| 1 |
| 15 |
=10÷40%,
=25;
(3)8×40%+
| 2 |
| 5 |
| 1 |
| 2 |
=8×40%+40%×2,
=(8+2)×40%,
=10×40%,
=4;
(4)4.15-3.15×10%-
| 5 |
| 8 |
=4.15-0.315-
| 5 |
| 8 |
=3.835-
| 5 |
| 8 |
=3.21.
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