题目内容
能简算的要简算:
(1)241×690÷339÷345×678÷241
(2)6-0.65+5
×99
(3)356×84
-4
×356-80÷
(4)[3.75-(0.2+
)×4
]÷13.5%
(1)241×690÷339÷345×678÷241
(2)6-0.65+5
| 7 |
| 20 |
(3)356×84
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 356 |
(4)[3.75-(0.2+
| 1 |
| 3 |
| 1 |
| 2 |
(1)241×690÷339÷345×678÷241,
=241×690×
×
×678×
,
=(241×
)×(
×678)×(690×
),
=1×2×2,
=4;
(2)6-0.65+5
×99,
=5.35+5.35×99,
=(1+99)×5.35,
=100×5.35,
=535;
(3)356×84
-4
×356-80÷
,
=356×84
-4
×356-80×356,
=356×(84
-4
-80),
=356×0,
=0;
(4)[3.75-(0.2+
)×4
]÷13.5%,
=[3
-(
+
)×4
]÷13.5%,
=[3
-
×
]÷13.5%,
=[
-
]÷13.5%,
=
÷13.5%,
=1.35÷0.135,
=10.
=241×690×
| 1 |
| 339 |
| 1 |
| 345 |
| 1 |
| 241 |
=(241×
| 1 |
| 241 |
| 1 |
| 339 |
| 1 |
| 345 |
=1×2×2,
=4;
(2)6-0.65+5
| 7 |
| 20 |
=5.35+5.35×99,
=(1+99)×5.35,
=100×5.35,
=535;
(3)356×84
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 356 |
=356×84
| 1 |
| 4 |
| 1 |
| 4 |
=356×(84
| 1 |
| 4 |
| 1 |
| 4 |
=356×0,
=0;
(4)[3.75-(0.2+
| 1 |
| 3 |
| 1 |
| 2 |
=[3
| 3 |
| 4 |
| 1 |
| 5 |
| 1 |
| 3 |
| 1 |
| 2 |
=[3
| 3 |
| 4 |
| 8 |
| 15 |
| 9 |
| 2 |
=[
| 15 |
| 4 |
| 12 |
| 5 |
=
| 27 |
| 20 |
=1.35÷0.135,
=10.
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