| 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=________. |