Check Your Answers Worksheet

Maths tricks trick 22: Last-digit detective · Set 547 · 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 629 + 647 = 1271 right or wrong? (a) Right (b) Wrong
2. 2.Last-digit check: is 12 × 20 = 240 right or wrong? (a) Wrong (b) Right
3. 3.Last-digit check: is 36 × 30 = 1071 right or wrong? (a) Right (b) Wrong
4. 4.Last-digit check: is 35 × 22 = 766 right or wrong? (a) Right (b) Wrong
5. 5.Last-digit check: is 88 × 28 = 2467 right or wrong? (a) Wrong (b) Right
6. 6.Last-digit check: is 556 + 331 = 896 right or wrong? (a) Wrong (b) Right
7. 7.Last-digit check: is 45 × 56 = 2520 right or wrong? (a) Wrong (b) Right
8. 8.Last-digit check: is 619 + 118 = 743 right or wrong? (a) Wrong (b) Right
9. 9.Last-digit check: is 940 + 471 = 1411 right or wrong? (a) Right (b) Wrong
10. 10.Last-digit check: is 767 + 855 = 1622 right or wrong? (a) Wrong (b) Right
11. 11.Last-digit check: is 810 + 510 = 1311 right or wrong? (a) Wrong (b) Right
12. 12.Last-digit check: is 540 + 632 = 1172 right or wrong? (a) Right (b) Wrong
13. 13.Last-digit check: is 823 + 889 = 1712 right or wrong? (a) Wrong (b) Right
14. 14.Last-digit check: is 86 × 25 = 2153 right or wrong? (a) Wrong (b) Right
15. 15.Last-digit check: is 127 + 962 = 1082 right or wrong? (a) Right (b) Wrong
16. 16.Last-digit check: is 759 + 257 = 1016 right or wrong? (a) Wrong (b) Right
17. 17.Last-digit check: is 63 × 31 = 1947 right or wrong? (a) Right (b) Wrong
18. 18.Last-digit check: is 439 + 567 = 1004 right or wrong? (a) Right (b) Wrong
19. 19.Last-digit check: is 604 + 549 = 1153 right or wrong? (a) Wrong (b) Right
20. 20.Last-digit check: is 29 × 82 = 2372 right or wrong? (a) Right (b) Wrong
21. 21.Last-digit check: is 31 × 66 = 2046 right or wrong? (a) Right (b) Wrong
22. 22.Last-digit check: is 75 × 39 = 2925 right or wrong? (a) Wrong (b) Right
23. 23.Last-digit check: is 84 × 65 = 5463 right or wrong? (a) Wrong (b) Right
24. 24.Last-digit check: is 60 × 37 = 2227 right or wrong? (a) Wrong (b) Right
25. 25.Last-digit check: is 609 + 609 = 1218 right or wrong? (a) Wrong (b) Right
26. 26.Last-digit check: is 17 × 36 = 612 right or wrong? (a) Wrong (b) Right
27. 27.Last-digit check: is 44 × 32 = 1415 right or wrong? (a) Wrong (b) Right
28. 28.Last-digit check: is 365 + 886 = 1242 right or wrong? (a) Right (b) Wrong
29. 29.Last-digit check: is 737 + 949 = 1687 right or wrong? (a) Wrong (b) Right
30. 30.Last-digit check: is 957 + 624 = 1573 right or wrong? (a) Wrong (b) Right
31. 31.Last-digit check: is 44 × 37 = 1628 right or wrong? (a) Right (b) Wrong
32. 32.Last-digit check: is 322 + 348 = 676 right or wrong? (a) Wrong (b) Right
33. 33.Last-digit check: is 980 + 733 = 1707 right or wrong? (a) Wrong (b) Right
34. 34.Last-digit check: is 842 + 792 = 1634 right or wrong? (a) Wrong (b) Right
35. 35.Last-digit check: is 439 + 939 = 1377 right or wrong? (a) Wrong (b) Right
36. 36.Last-digit check: is 957 + 244 = 1205 right or wrong? (a) Wrong (b) Right
37. 37.Last-digit check: is 92 × 33 = 3036 right or wrong? (a) Right (b) Wrong
38. 38.Last-digit check: is 328 + 293 = 621 right or wrong? (a) Right (b) Wrong
39. 39.Last-digit check: is 95 × 25 = 2375 right or wrong? (a) Wrong (b) Right
40. 40.Last-digit check: is 869 + 245 = 1114 right or wrong? (a) Wrong (b) Right

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