Check Your Answers Worksheet

Maths tricks trick 22: Last-digit detective · Set 324 · 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 94 × 43 = 4042 right or wrong? (a) Wrong (b) Right
2. 2.Last-digit check: is 791 + 661 = 1447 right or wrong? (a) Wrong (b) Right
3. 3.Last-digit check: is 956 + 558 = 1510 right or wrong? (a) Wrong (b) Right
4. 4.Last-digit check: is 95 × 28 = 2660 right or wrong? (a) Right (b) Wrong
5. 5.Last-digit check: is 12 × 68 = 816 right or wrong? (a) Wrong (b) Right
6. 6.Last-digit check: is 13 × 17 = 227 right or wrong? (a) Wrong (b) Right
7. 7.Last-digit check: is 55 × 52 = 2854 right or wrong? (a) Wrong (b) Right
8. 8.Last-digit check: is 44 × 21 = 924 right or wrong? (a) Wrong (b) Right
9. 9.Last-digit check: is 798 + 771 = 1569 right or wrong? (a) Right (b) Wrong
10. 10.Last-digit check: is 70 × 18 = 1262 right or wrong? (a) Wrong (b) Right
11. 11.Last-digit check: is 27 × 96 = 2591 right or wrong? (a) Wrong (b) Right
12. 12.Last-digit check: is 48 × 74 = 3546 right or wrong? (a) Wrong (b) Right
13. 13.Last-digit check: is 45 × 37 = 1665 right or wrong? (a) Right (b) Wrong
14. 14.Last-digit check: is 94 × 64 = 6016 right or wrong? (a) Right (b) Wrong
15. 15.Last-digit check: is 369 + 319 = 680 right or wrong? (a) Wrong (b) Right
16. 16.Last-digit check: is 999 + 476 = 1477 right or wrong? (a) Right (b) Wrong
17. 17.Last-digit check: is 421 + 793 = 1214 right or wrong? (a) Wrong (b) Right
18. 18.Last-digit check: is 49 × 84 = 4116 right or wrong? (a) Wrong (b) Right
19. 19.Last-digit check: is 85 × 42 = 3570 right or wrong? (a) Wrong (b) Right
20. 20.Last-digit check: is 57 × 91 = 5187 right or wrong? (a) Right (b) Wrong
21. 21.Last-digit check: is 457 + 503 = 961 right or wrong? (a) Wrong (b) Right
22. 22.Last-digit check: is 244 + 875 = 1119 right or wrong? (a) Wrong (b) Right
23. 23.Last-digit check: is 25 × 75 = 1883 right or wrong? (a) Right (b) Wrong
24. 24.Last-digit check: is 76 × 90 = 6832 right or wrong? (a) Right (b) Wrong
25. 25.Last-digit check: is 36 × 13 = 465 right or wrong? (a) Right (b) Wrong
26. 26.Last-digit check: is 890 + 597 = 1489 right or wrong? (a) Wrong (b) Right
27. 27.Last-digit check: is 58 × 18 = 1050 right or wrong? (a) Right (b) Wrong
28. 28.Last-digit check: is 186 + 195 = 379 right or wrong? (a) Wrong (b) Right
29. 29.Last-digit check: is 20 × 28 = 552 right or wrong? (a) Wrong (b) Right
30. 30.Last-digit check: is 412 + 657 = 1061 right or wrong? (a) Right (b) Wrong
31. 31.Last-digit check: is 67 × 83 = 5561 right or wrong? (a) Wrong (b) Right
32. 32.Last-digit check: is 514 + 302 = 817 right or wrong? (a) Right (b) Wrong
33. 33.Last-digit check: is 161 + 278 = 432 right or wrong? (a) Right (b) Wrong
34. 34.Last-digit check: is 693 + 684 = 1377 right or wrong? (a) Right (b) Wrong
35. 35.Last-digit check: is 561 + 967 = 1520 right or wrong? (a) Right (b) Wrong
36. 36.Last-digit check: is 33 × 16 = 528 right or wrong? (a) Wrong (b) Right
37. 37.Last-digit check: is 95 × 16 = 1520 right or wrong? (a) Wrong (b) Right
38. 38.Last-digit check: is 268 + 258 = 526 right or wrong? (a) Right (b) Wrong
39. 39.Last-digit check: is 164 + 258 = 423 right or wrong? (a) Right (b) Wrong
40. 40.Last-digit check: is 947 + 572 = 1519 right or wrong? (a) Right (b) Wrong

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