题目内容
脱式计算
46×8-120÷15
(12.5×8-40)÷0.6
÷
+
×
÷[(
+
)×
].
46×8-120÷15
(12.5×8-40)÷0.6
| 7 |
| 31 |
| 5 |
| 2 |
| 3 |
| 5 |
| 7 |
| 31 |
| 1 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
| 1 |
| 13 |
(1)46×8-120÷15,
=368-8,
=360;
(2)(12.5×8-40)÷0.6,
=(100-40)÷0.6,
=60÷0.6,
=100;
(3)
÷
+
×
,
=
×
+
×
,
=(
+
)×
,
=1×
,
=
;
(4)
÷[(
+
)×
],
=
÷[
×
],
=
÷
,
=3.
=368-8,
=360;
(2)(12.5×8-40)÷0.6,
=(100-40)÷0.6,
=60÷0.6,
=100;
(3)
| 7 |
| 31 |
| 5 |
| 2 |
| 3 |
| 5 |
| 7 |
| 31 |
=
| 7 |
| 31 |
| 2 |
| 5 |
| 3 |
| 5 |
| 7 |
| 31 |
=(
| 2 |
| 5 |
| 3 |
| 5 |
| 7 |
| 31 |
=1×
| 7 |
| 31 |
=
| 7 |
| 31 |
(4)
| 1 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
| 1 |
| 13 |
=
| 1 |
| 5 |
| 13 |
| 15 |
| 1 |
| 13 |
=
| 1 |
| 5 |
| 1 |
| 15 |
=3.
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