Generalise the properties of addition and subtraction with whole numbers
Generalise the properties of addition and subtraction with whole numbers
1. | Complem. add/subtract: 136+419=555 | |
2. | Complem. add/subtract: 216+84=300 | |
3. | Complem. add/subtract: 112+32=144 | |
4. | Complem. add/subtract: 125+14=139 | |
5. | Complem. add/subtract: 105+24=129 | |
6. | Complem. add/subtract: 210+14=224 | |
7. | Comp. pairs add/subtract: 678+156=834 | |
8. | Comp. pairs add/subtract: 246+357=603 | |
9. | Comp. pairs add/subtract: 545+328=873 | |
10. | Comp. pairs add/subtract: 488+323=811 | |
11. | Comp. pairs add/subtract: 493+257=750 | |
12. | Complementary pairs: 347+454=801 | |
13. | Complementary pairs: 482+395=877 | |
14. | Complementary pairs: 278+596=874 | |
15. | Complementary pairs: 532+209=741 | |
16. | Complementary pairs: 627+277=904 | |
17. | Complem. add/subtract: 652-547=105 | |
18. | Complem. add/subtract: 845-69=776 | |
19. | Complem. add/subtract: 492-116=376 | |
20. | Complem. add/subtract: 831-88=743 | |
21. | Complem. add/subtract: 634-97=537 | |
22. | Complem. add/subtract: 263-84=179 | |
23. | Complem. add/subtract: 751-47=704 | |
24. | Complem. add/subtract: 397-59=338 | |
25. | Complementary add/sub: 8236-547=7689 | |
26. | Complementary add/sub: 2815-492=2323 | |
27. | Complementary add/sub: 5730-166=5564 | |
28. | Complementary add/sub: 1073-561=512 | |
29. | Complementary add/sub: 6923-784=6139 | |
30. | True or False?: 4 x 3 = 2 x 6 | |
31. | True or False?: 10 x 0 = 5 x 0 | |
32. | True or False?: 6 x 4 = 2 x 12 | |
33. | True or False?: 10 x 3 = 6 x 5 | |
34. | True or False: 8x4 = 4x8 | |
35. | True or False: 5x4 = 2x10 | |
36. | True or False: 2x6 = 3x4 | |
37. | True or False: 54/6=6÷54 |