28. 25° 29. 30. 查看更多

 

题目列表(包括答案和解析)

25+26-12-13+27+28-14-15+29+30-16-17=
78
78

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25×20=
500
500
13×20=
260
260
50×21=
1050
1050
50×30=
1500
1500
140÷2=
70
70
70×15=
1050
1050
20×90=
1800
1800
800×60=
48000
48000
40×60=
2400
2400
98×10=
980
980
30×11=
330
330
10×88=
800
800
40×40=
1600
1600
41+29=
70
70
10×90=
900
900
140+50=
190
190
50×40=
2000
2000
13×70=
910
910
34×20=
680
680
60×12=
720
720
11×30=
330
330
600-30=
570
570
22×30=
660
660
500×50=
25000
25000
240÷3=
80
80
30×600=
18000
18000
240÷8=
30
30
370-50=
320
320

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25×20=________13×20=________50×21=________50×30=________
140÷2=________70×15=________20×90=________800×60=________
40×60=________98×10=________30×11=________10×88=________
40×40=________41+29=________10×90=________140+50=________
50×40=________13×70=________34×20=________60×12=________
11×30=________600-30=________22×30=________500×50=________
240÷3=________30×600=________240÷8=________370-50=________.

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1
2
×
2
5
=
1
5
1
5
5
7
÷
2
7
=
5
2
5
2
1
2
÷
1
4
=
2,
2,
1
3
=
9,
9,
10÷
1
8
×8=
640,
640,
5
14
×7=
5
2
5
2
3
5
+
2
5
=
1,
1,
100×
7
20
=
35,
35,
3
16
=
3
2
3
2
3
8
÷
3
8
×
5
6
=
5
6
5
6
1
4
+
1
3
=
7
12
7
12
1
4
=
0,
0,
2
9
=
2
9
2
9
7
12
÷
7
12
=
1,
1,
1
4
÷4×
1
4
=
1
16
1
16
5
6
×36=
30,
30,
3
10
=
10,
10,
10÷
5
9
=
18,
18,
6
5
÷
3
5
=
2,
2,
5
9
×
3
5
×3=
1,
1,
2
7
×14=
4,
4,
2
9
×
3
5
=
2
15
2
15
1
2
×3=
3
2
3
2
6
11
×
11
6
=
1,
1,
9×(2+
5
9
)=
23,
23,
70÷
7
10
=
100,
100,
19×
1
38
=
1
2
1
2
4
5
÷8%=
10,
10,
7
8
=
8
7
8
7
3
4
×
3
8
=
0
0

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