Check Your Answers Worksheet

Maths tricks trick 22: Last-digit detective · Set 904 · 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 60 × 96 = 5760 right or wrong? (a) Wrong (b) Right
2. 2.Last-digit check: is 254 + 972 = 1226 right or wrong? (a) Right (b) Wrong
3. 3.Last-digit check: is 547 + 724 = 1273 right or wrong? (a) Right (b) Wrong
4. 4.Last-digit check: is 670 + 262 = 932 right or wrong? (a) Wrong (b) Right
5. 5.Last-digit check: is 12 × 72 = 864 right or wrong? (a) Right (b) Wrong
6. 6.Last-digit check: is 86 × 35 = 3013 right or wrong? (a) Wrong (b) Right
7. 7.Last-digit check: is 605 + 321 = 926 right or wrong? (a) Wrong (b) Right
8. 8.Last-digit check: is 75 × 83 = 6227 right or wrong? (a) Right (b) Wrong
9. 9.Last-digit check: is 277 + 375 = 658 right or wrong? (a) Right (b) Wrong
10. 10.Last-digit check: is 39 × 12 = 468 right or wrong? (a) Wrong (b) Right
11. 11.Last-digit check: is 65 × 94 = 6110 right or wrong? (a) Right (b) Wrong
12. 12.Last-digit check: is 226 + 876 = 1094 right or wrong? (a) Wrong (b) Right
13. 13.Last-digit check: is 96 × 33 = 3168 right or wrong? (a) Right (b) Wrong
14. 14.Last-digit check: is 779 + 606 = 1385 right or wrong? (a) Right (b) Wrong
15. 15.Last-digit check: is 59 × 35 = 2067 right or wrong? (a) Wrong (b) Right
16. 16.Last-digit check: is 969 + 685 = 1655 right or wrong? (a) Right (b) Wrong
17. 17.Last-digit check: is 845 + 550 = 1399 right or wrong? (a) Wrong (b) Right
18. 18.Last-digit check: is 661 + 696 = 1357 right or wrong? (a) Right (b) Wrong
19. 19.Last-digit check: is 30 × 52 = 1564 right or wrong? (a) Right (b) Wrong
20. 20.Last-digit check: is 17 × 34 = 576 right or wrong? (a) Wrong (b) Right
21. 21.Last-digit check: is 13 × 63 = 819 right or wrong? (a) Wrong (b) Right
22. 22.Last-digit check: is 322 + 922 = 1242 right or wrong? (a) Wrong (b) Right
23. 23.Last-digit check: is 65 × 58 = 3773 right or wrong? (a) Right (b) Wrong
24. 24.Last-digit check: is 45 × 28 = 1260 right or wrong? (a) Wrong (b) Right
25. 25.Last-digit check: is 95 × 14 = 1330 right or wrong? (a) Wrong (b) Right
26. 26.Last-digit check: is 297 + 406 = 705 right or wrong? (a) Wrong (b) Right
27. 27.Last-digit check: is 443 + 924 = 1371 right or wrong? (a) Wrong (b) Right
28. 28.Last-digit check: is 917 + 364 = 1289 right or wrong? (a) Right (b) Wrong
29. 29.Last-digit check: is 21 × 42 = 880 right or wrong? (a) Wrong (b) Right
30. 30.Last-digit check: is 93 × 24 = 2228 right or wrong? (a) Wrong (b) Right
31. 31.Last-digit check: is 301 + 123 = 424 right or wrong? (a) Right (b) Wrong
32. 32.Last-digit check: is 62 × 95 = 5896 right or wrong? (a) Right (b) Wrong
33. 33.Last-digit check: is 507 + 137 = 642 right or wrong? (a) Right (b) Wrong
34. 34.Last-digit check: is 41 × 23 = 941 right or wrong? (a) Right (b) Wrong
35. 35.Last-digit check: is 350 + 959 = 1309 right or wrong? (a) Wrong (b) Right
36. 36.Last-digit check: is 526 + 685 = 1218 right or wrong? (a) Right (b) Wrong
37. 37.Last-digit check: is 150 + 171 = 321 right or wrong? (a) Right (b) Wrong
38. 38.Last-digit check: is 99 × 72 = 7128 right or wrong? (a) Wrong (b) Right
39. 39.Last-digit check: is 88 × 68 = 5984 right or wrong? (a) Right (b) Wrong
40. 40.Last-digit check: is 765 + 497 = 1259 right or wrong? (a) Wrong (b) Right

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