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25×4÷25×4=

[    ]

A5400

B80

C16

D19

答案:C
解析:

25×4÷25×4

=100÷25×4

=4×4

16

C


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450-140= 25÷7= 900+238= 600-9×8=
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10
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5
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8
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18
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2
×
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5
=
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4
9
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450-140= 25÷7= 900+238= 600-9×8=
90-7×5= 26+30-28= 48÷(2+4)= 780-772=
26+24= 80-30= 78-26=
5
6
-
1
2
=
(
1
2
+
1
3
+
1
4
) × 24
=
0.25×2.69×4= 10-2.87-7.13=
12
7
÷24=
4
5
=
0.87-0.49 4.9×0.7=
4
5
÷
7
10
=
8
5
 ÷
5
8
=
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18
÷
5
9
=
1
2
×
1
5
=
2+
4
9
=
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16
÷
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16
=
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26
÷
8
13
=
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2
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2
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1
3
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7
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4
5
=
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5
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7
10
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5
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8
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9
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5
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16
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26
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13
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