题目内容
| 脱式计算,能简算的要简算: 3-
|
| 65×101-65= | ||||||||||||||
| 70.2÷[(5.3-1.4)×0.2]= | 45×
|
|
(1)3-
×
-
,
=3-
-
,
=3-(
+
),
=3-1,
=2;
(2)
÷
+
×
,
=
×
+
×
,
=
×(
+
),
=
;
(3)65×101-65,
=65×(101-1),
=65×100,
=6500;
(4)70.2÷[(5.3-1.4)×0.2],
=70.2÷(3.9×0.2),
=70.2÷0.78,
=90;
(5)45×
,
=44×
+
,
=5
;
(6)
×4÷
×4,
=1×4×4,
=16.
| 5 |
| 18 |
| 27 |
| 40 |
| 13 |
| 16 |
=3-
| 3 |
| 16 |
| 13 |
| 16 |
=3-(
| 3 |
| 16 |
| 13 |
| 16 |
=3-1,
=2;
(2)
| 7 |
| 9 |
| 11 |
| 5 |
| 2 |
| 9 |
| 5 |
| 11 |
=
| 7 |
| 9 |
| 5 |
| 11 |
| 2 |
| 9 |
| 5 |
| 11 |
=
| 5 |
| 11 |
| 7 |
| 9 |
| 2 |
| 9 |
=
| 5 |
| 11 |
(3)65×101-65,
=65×(101-1),
=65×100,
=6500;
(4)70.2÷[(5.3-1.4)×0.2],
=70.2÷(3.9×0.2),
=70.2÷0.78,
=90;
(5)45×
| 5 |
| 44 |
=44×
| 5 |
| 44 |
| 5 |
| 44 |
=5
| 5 |
| 44 |
(6)
| 1 |
| 4 |
| 1 |
| 4 |
=1×4×4,
=16.
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