Check Your Answers Worksheet

Maths tricks trick 22: Last-digit detective · Set 548 · 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 29 × 35 = 1024 right or wrong? (a) Right (b) Wrong
2. 2.Last-digit check: is 986 + 637 = 1620 right or wrong? (a) Wrong (b) Right
3. 3.Last-digit check: is 46 × 25 = 1159 right or wrong? (a) Wrong (b) Right
4. 4.Last-digit check: is 53 × 77 = 4081 right or wrong? (a) Wrong (b) Right
5. 5.Last-digit check: is 338 + 869 = 1205 right or wrong? (a) Wrong (b) Right
6. 6.Last-digit check: is 294 + 348 = 651 right or wrong? (a) Wrong (b) Right
7. 7.Last-digit check: is 67 × 40 = 2684 right or wrong? (a) Wrong (b) Right
8. 8.Last-digit check: is 41 × 63 = 2578 right or wrong? (a) Wrong (b) Right
9. 9.Last-digit check: is 788 + 167 = 955 right or wrong? (a) Right (b) Wrong
10. 10.Last-digit check: is 49 × 16 = 784 right or wrong? (a) Right (b) Wrong
11. 11.Last-digit check: is 84 × 87 = 7304 right or wrong? (a) Wrong (b) Right
12. 12.Last-digit check: is 229 + 810 = 1038 right or wrong? (a) Right (b) Wrong
13. 13.Last-digit check: is 554 + 466 = 1020 right or wrong? (a) Wrong (b) Right
14. 14.Last-digit check: is 33 × 41 = 1353 right or wrong? (a) Wrong (b) Right
15. 15.Last-digit check: is 83 × 76 = 6308 right or wrong? (a) Wrong (b) Right
16. 16.Last-digit check: is 734 + 167 = 902 right or wrong? (a) Right (b) Wrong
17. 17.Last-digit check: is 304 + 166 = 466 right or wrong? (a) Wrong (b) Right
18. 18.Last-digit check: is 79 × 18 = 1422 right or wrong? (a) Right (b) Wrong
19. 19.Last-digit check: is 525 + 765 = 1290 right or wrong? (a) Right (b) Wrong
20. 20.Last-digit check: is 21 × 36 = 761 right or wrong? (a) Wrong (b) Right
21. 21.Last-digit check: is 64 × 89 = 5696 right or wrong? (a) Right (b) Wrong
22. 22.Last-digit check: is 543 + 654 = 1199 right or wrong? (a) Right (b) Wrong
23. 23.Last-digit check: is 676 + 144 = 820 right or wrong? (a) Wrong (b) Right
24. 24.Last-digit check: is 940 + 178 = 1118 right or wrong? (a) Wrong (b) Right
25. 25.Last-digit check: is 589 + 915 = 1500 right or wrong? (a) Right (b) Wrong
26. 26.Last-digit check: is 33 × 64 = 2112 right or wrong? (a) Right (b) Wrong
27. 27.Last-digit check: is 32 × 37 = 1184 right or wrong? (a) Right (b) Wrong
28. 28.Last-digit check: is 86 × 75 = 6450 right or wrong? (a) Right (b) Wrong
29. 29.Last-digit check: is 58 × 55 = 3194 right or wrong? (a) Right (b) Wrong
30. 30.Last-digit check: is 752 + 612 = 1364 right or wrong? (a) Wrong (b) Right
31. 31.Last-digit check: is 392 + 332 = 717 right or wrong? (a) Wrong (b) Right
32. 32.Last-digit check: is 40 × 60 = 2400 right or wrong? (a) Wrong (b) Right
33. 33.Last-digit check: is 733 + 464 = 1205 right or wrong? (a) Right (b) Wrong
34. 34.Last-digit check: is 962 + 889 = 1851 right or wrong? (a) Right (b) Wrong
35. 35.Last-digit check: is 245 + 580 = 824 right or wrong? (a) Right (b) Wrong
36. 36.Last-digit check: is 86 × 24 = 2064 right or wrong? (a) Wrong (b) Right
37. 37.Last-digit check: is 42 × 45 = 1881 right or wrong? (a) Right (b) Wrong
38. 38.Last-digit check: is 699 + 540 = 1239 right or wrong? (a) Right (b) Wrong
39. 39.Last-digit check: is 345 + 849 = 1194 right or wrong? (a) Right (b) Wrong
40. 40.Last-digit check: is 683 + 657 = 1340 right or wrong? (a) Wrong (b) Right

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