题目内容
计算(能简便计算的要用简便方法计算)
945÷(720-21×33)
9.05-11.3×0.6-1.22
÷23+
×
÷[
×(
-
)].
945÷(720-21×33)
9.05-11.3×0.6-1.22
| 8 |
| 15 |
| 1 |
| 23 |
| 7 |
| 25 |
| 14 |
| 27 |
| 8 |
| 9 |
| 1 |
| 2 |
| 3 |
| 8 |
(1)945÷(720-21×33),
=945÷(720-693),
=945÷27,
=35;
(2)9.05-11.3×0.6-1.22,
=9.05-6.78-1.22,
=9.05-(6.78+1.22),
=9.05-8,
=1.05;
(3)
÷23+
×
,
=
×
+
×
,
=(
+
)×
,
=1×
,
=
;
(4)
÷[
×(
-
)],
=
÷[
×
],
=
÷
,
=
×9,
=
.
=945÷(720-693),
=945÷27,
=35;
(2)9.05-11.3×0.6-1.22,
=9.05-6.78-1.22,
=9.05-(6.78+1.22),
=9.05-8,
=1.05;
(3)
| 8 |
| 15 |
| 1 |
| 23 |
| 7 |
| 15 |
=
| 8 |
| 15 |
| 1 |
| 23 |
| 1 |
| 23 |
| 7 |
| 25 |
=(
| 8 |
| 15 |
| 7 |
| 15 |
| 1 |
| 23 |
=1×
| 1 |
| 23 |
=
| 1 |
| 23 |
(4)
| 14 |
| 27 |
| 8 |
| 9 |
| 1 |
| 2 |
| 3 |
| 8 |
=
| 14 |
| 27 |
| 8 |
| 9 |
| 1 |
| 8 |
=
| 14 |
| 27 |
| 1 |
| 9 |
=
| 14 |
| 27 |
=
| 14 |
| 3 |
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