摘要:28. 25° 29. 30.
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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 . |
| 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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2, 2, | ||||||||||||||||||||
3÷
9, 9, |
10÷
640, 640, |
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1, 1, |
100×
35, 35, |
8×
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0×
0, 0, | ||||||||||||||||||||
1×
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1, 1, |
4×
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30, 30, |
3÷
10, 10, |
10÷
18, 18, | ||||||||||||||||||||
2, 2, |
1, 1, |
4, 4, | ||||||||||||||||||||
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1, 1, | ||||||||||||||||||||
9×(2+
23, 23, |
70÷
100, 100, |
19×
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10, 10, |
1÷
|
0÷
0 0 . |