题目内容
(1)1025-4050÷54
(2)(100-19)÷(1.63+1.07)
(3)5-
÷
×
(4)4.3÷(3.4-1.25)×0.4]
(5)
÷[(
-
)×
].
(2)(100-19)÷(1.63+1.07)
(3)5-
| 1 |
| 3 |
| 3 |
| 4 |
| 2 |
| 3 |
(4)4.3÷(3.4-1.25)×0.4]
(5)
| 1 |
| 4 |
| 3 |
| 5 |
| 1 |
| 4 |
| 2 |
| 5 |
(1)1025-4050÷54
=1025-75
=950;
(2)(100-19)÷(1.63+1.07)
=81÷2.7
=30;
(3)5-
÷
×
=5-
×
×
=5-
×
=5-
=4
;
(4)4.3÷[(3.4-1.25)×0.4]
=4.3÷[2.15×0.4]
=4.3÷0.86
=5;
(5)
÷[(
-
)×
].
=
÷[
×
].
=
÷
=1
.
=1025-75
=950;
(2)(100-19)÷(1.63+1.07)
=81÷2.7
=30;
(3)5-
| 1 |
| 3 |
| 3 |
| 4 |
| 2 |
| 3 |
=5-
| 1 |
| 3 |
| 4 |
| 3 |
| 2 |
| 3 |
=5-
| 4 |
| 9 |
| 2 |
| 3 |
=5-
| 8 |
| 27 |
=4
| 19 |
| 27 |
(4)4.3÷[(3.4-1.25)×0.4]
=4.3÷[2.15×0.4]
=4.3÷0.86
=5;
(5)
| 1 |
| 4 |
| 3 |
| 5 |
| 1 |
| 4 |
| 2 |
| 5 |
=
| 1 |
| 4 |
| 7 |
| 20 |
| 2 |
| 5 |
=
| 1 |
| 4 |
| 7 |
| 50 |
=1
| 11 |
| 14 |
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