题目内容
脱式计算(能简便计算的要简便计算).
15×43%+85×0.43
÷
+
×
(
-
)×
÷25%
15×43%+85×0.43
| 7 |
| 9 |
| 11 |
| 5 |
| 2 |
| 9 |
| 5 |
| 11 |
(
| 1 |
| 2 |
| 1 |
| 3 |
| 3 |
| 8 |
(1)15×43%+85×0.43
=15×0.43+85×0.43,
=(15+85)×0.43,
=100×0.43,
=43;
(2)
÷
+
×
=
×
+
×
,
=(
+
)×
,
=1×
,
=
;
(3)(
-
)×
÷25%
=(
-
)×
÷
,
=
×
×4,
=
.
=15×0.43+85×0.43,
=(15+85)×0.43,
=100×0.43,
=43;
(2)
| 7 |
| 9 |
| 11 |
| 5 |
| 2 |
| 9 |
| 5 |
| 11 |
=
| 7 |
| 9 |
| 5 |
| 11 |
| 2 |
| 9 |
| 5 |
| 11 |
=(
| 7 |
| 9 |
| 2 |
| 9 |
| 5 |
| 11 |
=1×
| 5 |
| 11 |
=
| 5 |
| 11 |
(3)(
| 1 |
| 2 |
| 1 |
| 3 |
| 3 |
| 8 |
=(
| 3 |
| 6 |
| 2 |
| 6 |
| 3 |
| 8 |
| 1 |
| 4 |
=
| 1 |
| 6 |
| 3 |
| 8 |
=
| 1 |
| 4 |
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