Check Your Answers Worksheet

Maths tricks trick 22: Last-digit detective · Set 926 · 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 292 + 768 = 1052 right or wrong? (a) Right (b) Wrong
2. 2.Last-digit check: is 363 + 146 = 509 right or wrong? (a) Right (b) Wrong
3. 3.Last-digit check: is 80 × 54 = 4311 right or wrong? (a) Right (b) Wrong
4. 4.Last-digit check: is 21 × 77 = 1613 right or wrong? (a) Right (b) Wrong
5. 5.Last-digit check: is 46 × 64 = 2951 right or wrong? (a) Wrong (b) Right
6. 6.Last-digit check: is 845 + 854 = 1699 right or wrong? (a) Right (b) Wrong
7. 7.Last-digit check: is 82 × 90 = 7374 right or wrong? (a) Right (b) Wrong
8. 8.Last-digit check: is 30 × 39 = 1170 right or wrong? (a) Wrong (b) Right
9. 9.Last-digit check: is 282 + 397 = 685 right or wrong? (a) Wrong (b) Right
10. 10.Last-digit check: is 220 + 967 = 1185 right or wrong? (a) Wrong (b) Right
11. 11.Last-digit check: is 578 + 164 = 744 right or wrong? (a) Wrong (b) Right
12. 12.Last-digit check: is 792 + 545 = 1342 right or wrong? (a) Wrong (b) Right
13. 13.Last-digit check: is 389 + 374 = 763 right or wrong? (a) Right (b) Wrong
14. 14.Last-digit check: is 837 + 150 = 987 right or wrong? (a) Wrong (b) Right
15. 15.Last-digit check: is 66 × 33 = 2178 right or wrong? (a) Right (b) Wrong
16. 16.Last-digit check: is 25 × 79 = 1975 right or wrong? (a) Wrong (b) Right
17. 17.Last-digit check: is 36 × 12 = 432 right or wrong? (a) Wrong (b) Right
18. 18.Last-digit check: is 629 + 300 = 929 right or wrong? (a) Right (b) Wrong
19. 19.Last-digit check: is 19 × 12 = 221 right or wrong? (a) Right (b) Wrong
20. 20.Last-digit check: is 506 + 624 = 1130 right or wrong? (a) Wrong (b) Right
21. 21.Last-digit check: is 74 × 65 = 4809 right or wrong? (a) Wrong (b) Right
22. 22.Last-digit check: is 95 × 21 = 1995 right or wrong? (a) Wrong (b) Right
23. 23.Last-digit check: is 74 × 36 = 2660 right or wrong? (a) Wrong (b) Right
24. 24.Last-digit check: is 75 × 17 = 1281 right or wrong? (a) Right (b) Wrong
25. 25.Last-digit check: is 38 × 64 = 2435 right or wrong? (a) Right (b) Wrong
26. 26.Last-digit check: is 73 × 44 = 3204 right or wrong? (a) Wrong (b) Right
27. 27.Last-digit check: is 89 × 56 = 4984 right or wrong? (a) Right (b) Wrong
28. 28.Last-digit check: is 876 + 666 = 1542 right or wrong? (a) Wrong (b) Right
29. 29.Last-digit check: is 526 + 898 = 1424 right or wrong? (a) Right (b) Wrong
30. 30.Last-digit check: is 240 + 334 = 571 right or wrong? (a) Right (b) Wrong
31. 31.Last-digit check: is 592 + 336 = 928 right or wrong? (a) Right (b) Wrong
32. 32.Last-digit check: is 27 × 16 = 429 right or wrong? (a) Right (b) Wrong
33. 33.Last-digit check: is 30 × 44 = 1321 right or wrong? (a) Right (b) Wrong
34. 34.Last-digit check: is 51 × 88 = 4494 right or wrong? (a) Right (b) Wrong
35. 35.Last-digit check: is 59 × 78 = 4602 right or wrong? (a) Wrong (b) Right
36. 36.Last-digit check: is 443 + 942 = 1385 right or wrong? (a) Wrong (b) Right
37. 37.Last-digit check: is 983 + 189 = 1176 right or wrong? (a) Right (b) Wrong
38. 38.Last-digit check: is 19 × 28 = 539 right or wrong? (a) Right (b) Wrong
39. 39.Last-digit check: is 587 + 332 = 910 right or wrong? (a) Right (b) Wrong
40. 40.Last-digit check: is 74 × 92 = 6808 right or wrong? (a) Wrong (b) Right

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