题目内容
计算(能简算要简算)
(1)3
+0.65÷1.3-30%
(2)(
+
×
)÷
(3)
÷[1÷(
-
)]
(4)
+0.36×
+
×0.64
(5)6除1.5的商,加上4,再乘4,积是多少?
(1)3
| 1 |
| 2 |
(2)(
| 1 |
| 2 |
| 5 |
| 12 |
| 2 |
| 3 |
| 7 |
| 9 |
(3)
| 4 |
| 5 |
| 5 |
| 8 |
| 1 |
| 4 |
(4)
| 5 |
| 6 |
| 5 |
| 6 |
| 5 |
| 6 |
(5)6除1.5的商,加上4,再乘4,积是多少?
(1)3
+0.65÷1.3-30%
=3.5+0.5-30%
=4-0.3
=3.7;
(2)(
+
×
)÷
=
÷
=1;
(3)
÷[1÷(
-
)]
=
÷[1÷
]
=
÷
=
;
(4)
+0.36×
+
×0.64
=
×(0.36+1+0.64)
=
×2
=
;
(5)(1.5÷6+4)×4
=(0.25+4)×4
=4.25×4
=17
答:积是17.
| 1 |
| 2 |
=3.5+0.5-30%
=4-0.3
=3.7;
(2)(
| 1 |
| 2 |
| 5 |
| 12 |
| 2 |
| 3 |
| 7 |
| 9 |
=
| 7 |
| 9 |
| 7 |
| 9 |
=1;
(3)
| 4 |
| 5 |
| 5 |
| 8 |
| 1 |
| 4 |
=
| 4 |
| 5 |
| 3 |
| 8 |
=
| 4 |
| 5 |
| 8 |
| 3 |
=
| 3 |
| 10 |
(4)
| 5 |
| 6 |
| 5 |
| 6 |
| 5 |
| 6 |
=
| 5 |
| 6 |
=
| 5 |
| 6 |
=
| 5 |
| 3 |
(5)(1.5÷6+4)×4
=(0.25+4)×4
=4.25×4
=17
答:积是17.
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