题目内容
下面各题,怎样筒便就怎样算.
| 18÷(4.49+34.3×0.2) |
| ||||||||||
|
| ||||||||||
(9-3.06÷
| [1-(
|
(1)18÷(4.49+34.3×0.2)
=18÷(4.49+6.86)
=18÷11.35
=1
;
(2)
÷7+
×
=
×
+
×
=(
+
)×
=1×
=
;
(3)
-
-
+
=(
+
)-(
+
)
=2-1
=1;
(4)
×3.2+5.6×0.5+1.2×50%
=0.5×3.2+5.6×0.5+1.2×0.5
=(3.2+5.6+1.2)×0.5
=10×0.5
=5;
(5)(9-3.06÷
)×
=(9-5.1)×
=3.9×
=6;
(6)[1-(
-1.5)÷
]×0.75
=[1-
÷
]×0.75
=[1-
]×0.75
=
×0.75
=
.
=18÷(4.49+6.86)
=18÷11.35
=1
| 133 |
| 227 |
(2)
| 8 |
| 13 |
| 1 |
| 7 |
| 5 |
| 13 |
=
| 8 |
| 13 |
| 1 |
| 7 |
| 1 |
| 7 |
| 5 |
| 13 |
=(
| 8 |
| 13 |
| 5 |
| 13 |
| 1 |
| 7 |
=1×
| 1 |
| 7 |
=
| 1 |
| 7 |
(3)
| 11 |
| 10 |
| 1 |
| 4 |
| 3 |
| 4 |
| 9 |
| 10 |
=(
| 11 |
| 10 |
| 9 |
| 10 |
| 1 |
| 4 |
| 3 |
| 4 |
=2-1
=1;
(4)
| 1 |
| 2 |
=0.5×3.2+5.6×0.5+1.2×0.5
=(3.2+5.6+1.2)×0.5
=10×0.5
=5;
(5)(9-3.06÷
| 3 |
| 5 |
| 20 |
| 13 |
=(9-5.1)×
| 20 |
| 13 |
=3.9×
| 20 |
| 13 |
=6;
(6)[1-(
| 5 |
| 3 |
| 5 |
| 12 |
=[1-
| 1 |
| 6 |
| 5 |
| 12 |
=[1-
| 2 |
| 5 |
=
| 3 |
| 5 |
=
| 9 |
| 20 |
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