题目内容
脱式计算,能简算的要简算.
| 46×8-120÷15 | [6.85-(0.65+0.7)]÷2.5 |
| 5.58-
|
(1)46×8-120÷15,
=368-8,
=360;
(2)[6.85-(0.65+0.7)]÷2.5,
=[6.85-0.65-0.7]÷2.5,
=[6.2-0.7]÷2.5,
=5.5÷2.5,
=2.2;
(3)
÷9+
×
,
=
×
+
×
,
=(
+
)×
,
=1×
,
=
;
(4)5.58-
+5.42-
,
=(5.58+5.42)-(
+
),
=11-1,
=10.
=368-8,
=360;
(2)[6.85-(0.65+0.7)]÷2.5,
=[6.85-0.65-0.7]÷2.5,
=[6.2-0.7]÷2.5,
=5.5÷2.5,
=2.2;
(3)
| 7 |
| 12 |
| 1 |
| 9 |
| 5 |
| 12 |
=
| 7 |
| 12 |
| 1 |
| 9 |
| 1 |
| 9 |
| 5 |
| 12 |
=(
| 7 |
| 12 |
| 5 |
| 12 |
| 1 |
| 9 |
=1×
| 1 |
| 9 |
=
| 1 |
| 9 |
(4)5.58-
| 3 |
| 5 |
| 2 |
| 5 |
=(5.58+5.42)-(
| 3 |
| 5 |
| 2 |
| 5 |
=11-1,
=10.
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