题目内容
用递等式计算下面各题,能简算的要简算
×0.25+
×
(
+
-
)×12
3
×8-3
×6+3×3.75
863+47.95÷0.35-529.
| 5 |
| 6 |
| 1 |
| 4 |
| 1 |
| 6 |
(
| 3 |
| 4 |
| 11 |
| 6 |
| 13 |
| 24 |
3
| 3 |
| 4 |
| 3 |
| 4 |
863+47.95÷0.35-529.
(1)
×0.25+
×
=
×
+
×
,
=(
+
)×
,
=1×
,
=
;
(2)(
+
-
)×12,
=
×12+
×12-
×12,
=9+22-6
,
=24
;
(3)3
×8-3
×6+3×3.75
=3
×8-3
×6+3×3
,
=(8-6+3)×3
,
=5×3
,
=18
;
863+47.95÷0.35-529
=863+137-529,
=1000-529,
=471.
| 5 |
| 6 |
| 1 |
| 4 |
| 1 |
| 6 |
=
| 5 |
| 6 |
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 6 |
=(
| 5 |
| 6 |
| 1 |
| 6 |
| 1 |
| 4 |
=1×
| 1 |
| 4 |
=
| 1 |
| 4 |
(2)(
| 3 |
| 4 |
| 11 |
| 6 |
| 13 |
| 24 |
=
| 3 |
| 4 |
| 11 |
| 6 |
| 13 |
| 24 |
=9+22-6
| 1 |
| 2 |
=24
| 1 |
| 2 |
(3)3
| 3 |
| 4 |
| 3 |
| 4 |
=3
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 4 |
=(8-6+3)×3
| 3 |
| 4 |
=5×3
| 3 |
| 4 |
=18
| 3 |
| 4 |
863+47.95÷0.35-529
=863+137-529,
=1000-529,
=471.
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