Check Your Answers Worksheet

Maths tricks trick 22: Last-digit detective · Set 951 · 40 questions

The trick (Last digits only): Multiply (or add) only the last digits of the two numbers. The last digit of that result is the last digit the answer must have. Different last digit → wrong for sure. Same last digit → it passes the check (work it out in full to be certain).

1. 1.Last-digit check: is 993 + 682 = 1675 right or wrong? (a) Right (b) Wrong
2. 2.Last-digit check: is 70 × 42 = 2940 right or wrong? (a) Wrong (b) Right
3. 3.Last-digit check: is 55 × 43 = 2365 right or wrong? (a) Wrong (b) Right
4. 4.Last-digit check: is 82 × 52 = 4267 right or wrong? (a) Wrong (b) Right
5. 5.Last-digit check: is 834 + 676 = 1510 right or wrong? (a) Wrong (b) Right
6. 6.Last-digit check: is 375 + 186 = 561 right or wrong? (a) Right (b) Wrong
7. 7.Last-digit check: is 559 + 168 = 727 right or wrong? (a) Wrong (b) Right
8. 8.Last-digit check: is 23 × 12 = 276 right or wrong? (a) Right (b) Wrong
9. 9.Last-digit check: is 860 + 289 = 1149 right or wrong? (a) Wrong (b) Right
10. 10.Last-digit check: is 13 × 31 = 403 right or wrong? (a) Right (b) Wrong
11. 11.Last-digit check: is 773 + 939 = 1714 right or wrong? (a) Right (b) Wrong
12. 12.Last-digit check: is 35 × 51 = 1785 right or wrong? (a) Right (b) Wrong
13. 13.Last-digit check: is 74 × 30 = 2220 right or wrong? (a) Right (b) Wrong
14. 14.Last-digit check: is 41 × 29 = 1185 right or wrong? (a) Right (b) Wrong
15. 15.Last-digit check: is 753 + 397 = 1150 right or wrong? (a) Right (b) Wrong
16. 16.Last-digit check: is 19 × 46 = 867 right or wrong? (a) Right (b) Wrong
17. 17.Last-digit check: is 985 + 774 = 1767 right or wrong? (a) Right (b) Wrong
18. 18.Last-digit check: is 29 × 53 = 1537 right or wrong? (a) Right (b) Wrong
19. 19.Last-digit check: is 110 + 367 = 477 right or wrong? (a) Wrong (b) Right
20. 20.Last-digit check: is 445 + 150 = 602 right or wrong? (a) Wrong (b) Right
21. 21.Last-digit check: is 33 × 97 = 3201 right or wrong? (a) Right (b) Wrong
22. 22.Last-digit check: is 493 + 885 = 1378 right or wrong? (a) Wrong (b) Right
23. 23.Last-digit check: is 738 + 263 = 996 right or wrong? (a) Right (b) Wrong
24. 24.Last-digit check: is 70 × 19 = 1336 right or wrong? (a) Wrong (b) Right
25. 25.Last-digit check: is 90 × 19 = 1712 right or wrong? (a) Right (b) Wrong
26. 26.Last-digit check: is 85 × 63 = 5349 right or wrong? (a) Wrong (b) Right
27. 27.Last-digit check: is 507 + 934 = 1441 right or wrong? (a) Wrong (b) Right
28. 28.Last-digit check: is 48 × 27 = 1296 right or wrong? (a) Right (b) Wrong
29. 29.Last-digit check: is 44 × 55 = 2420 right or wrong? (a) Right (b) Wrong
30. 30.Last-digit check: is 35 × 84 = 2942 right or wrong? (a) Wrong (b) Right
31. 31.Last-digit check: is 751 + 144 = 895 right or wrong? (a) Wrong (b) Right
32. 32.Last-digit check: is 115 + 753 = 868 right or wrong? (a) Wrong (b) Right
33. 33.Last-digit check: is 86 × 43 = 3698 right or wrong? (a) Right (b) Wrong
34. 34.Last-digit check: is 496 + 961 = 1457 right or wrong? (a) Right (b) Wrong
35. 35.Last-digit check: is 605 + 866 = 1480 right or wrong? (a) Wrong (b) Right
36. 36.Last-digit check: is 48 × 35 = 1680 right or wrong? (a) Right (b) Wrong
37. 37.Last-digit check: is 764 + 919 = 1678 right or wrong? (a) Right (b) Wrong
38. 38.Last-digit check: is 77 × 93 = 7161 right or wrong? (a) Right (b) Wrong
39. 39.Last-digit check: is 40 × 94 = 3763 right or wrong? (a) Wrong (b) Right
40. 40.Last-digit check: is 62 × 32 = 1991 right or wrong? (a) Right (b) Wrong

Free maths tricks lessons, practice and worksheets at talentjr.in/maths-tricks