题目内容
用科学合理方法计算.
①
×
+40%×
②360×
÷(1-40%)
③
×8×
×12.5%
①
| 2 |
| 5 |
| 1 |
| 5 |
| 4 |
| 5 |
②360×
| 2 |
| 5 |
③
| 6 |
| 7 |
| 14 |
| 3 |
①
×
+40%×
,
=
×(
+
),
=
×1,
=
;
②360×
÷(1-40%),
=360×
÷0.6,
=144÷0.6,
=240;
③
×8×
×12.5%,
=(
×
)×(8×12.5%),
=4×1,
=4.
| 2 |
| 5 |
| 1 |
| 5 |
| 4 |
| 5 |
=
| 2 |
| 5 |
| 1 |
| 5 |
| 4 |
| 5 |
=
| 2 |
| 5 |
=
| 2 |
| 5 |
②360×
| 2 |
| 5 |
=360×
| 2 |
| 5 |
=144÷0.6,
=240;
③
| 6 |
| 7 |
| 14 |
| 3 |
=(
| 6 |
| 7 |
| 14 |
| 3 |
=4×1,
=4.
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