Check Your Answers Worksheet

Maths tricks trick 22: Last-digit detective · Set 980 · 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 959 + 856 = 1810 right or wrong? (a) Right (b) Wrong
2. 2.Last-digit check: is 16 × 31 = 499 right or wrong? (a) Wrong (b) Right
3. 3.Last-digit check: is 76 × 17 = 1292 right or wrong? (a) Right (b) Wrong
4. 4.Last-digit check: is 716 + 177 = 891 right or wrong? (a) Right (b) Wrong
5. 5.Last-digit check: is 554 + 850 = 1399 right or wrong? (a) Right (b) Wrong
6. 6.Last-digit check: is 42 × 58 = 2436 right or wrong? (a) Wrong (b) Right
7. 7.Last-digit check: is 75 × 86 = 6450 right or wrong? (a) Right (b) Wrong
8. 8.Last-digit check: is 88 × 85 = 7480 right or wrong? (a) Right (b) Wrong
9. 9.Last-digit check: is 70 × 26 = 1820 right or wrong? (a) Wrong (b) Right
10. 10.Last-digit check: is 955 + 270 = 1225 right or wrong? (a) Right (b) Wrong
11. 11.Last-digit check: is 970 + 259 = 1229 right or wrong? (a) Right (b) Wrong
12. 12.Last-digit check: is 805 + 582 = 1387 right or wrong? (a) Wrong (b) Right
13. 13.Last-digit check: is 170 + 208 = 379 right or wrong? (a) Wrong (b) Right
14. 14.Last-digit check: is 89 × 39 = 3474 right or wrong? (a) Right (b) Wrong
15. 15.Last-digit check: is 28 × 48 = 1344 right or wrong? (a) Right (b) Wrong
16. 16.Last-digit check: is 498 + 693 = 1191 right or wrong? (a) Right (b) Wrong
17. 17.Last-digit check: is 44 × 12 = 519 right or wrong? (a) Right (b) Wrong
18. 18.Last-digit check: is 352 + 657 = 1006 right or wrong? (a) Wrong (b) Right
19. 19.Last-digit check: is 71 × 79 = 5616 right or wrong? (a) Right (b) Wrong
20. 20.Last-digit check: is 58 × 53 = 3076 right or wrong? (a) Wrong (b) Right
21. 21.Last-digit check: is 541 + 782 = 1323 right or wrong? (a) Right (b) Wrong
22. 22.Last-digit check: is 45 × 89 = 4005 right or wrong? (a) Right (b) Wrong
23. 23.Last-digit check: is 66 × 29 = 1920 right or wrong? (a) Right (b) Wrong
24. 24.Last-digit check: is 256 + 161 = 417 right or wrong? (a) Wrong (b) Right
25. 25.Last-digit check: is 59 × 82 = 4829 right or wrong? (a) Right (b) Wrong
26. 26.Last-digit check: is 81 × 80 = 6473 right or wrong? (a) Right (b) Wrong
27. 27.Last-digit check: is 29 × 66 = 1914 right or wrong? (a) Wrong (b) Right
28. 28.Last-digit check: is 607 + 876 = 1474 right or wrong? (a) Wrong (b) Right
29. 29.Last-digit check: is 82 × 86 = 7056 right or wrong? (a) Wrong (b) Right
30. 30.Last-digit check: is 20 × 76 = 1522 right or wrong? (a) Wrong (b) Right
31. 31.Last-digit check: is 767 + 552 = 1319 right or wrong? (a) Wrong (b) Right
32. 32.Last-digit check: is 29 × 95 = 2750 right or wrong? (a) Wrong (b) Right
33. 33.Last-digit check: is 588 + 924 = 1512 right or wrong? (a) Wrong (b) Right
34. 34.Last-digit check: is 52 × 40 = 2078 right or wrong? (a) Wrong (b) Right
35. 35.Last-digit check: is 55 × 26 = 1439 right or wrong? (a) Wrong (b) Right
36. 36.Last-digit check: is 349 + 344 = 688 right or wrong? (a) Wrong (b) Right
37. 37.Last-digit check: is 88 × 35 = 3075 right or wrong? (a) Wrong (b) Right
38. 38.Last-digit check: is 69 × 77 = 5317 right or wrong? (a) Right (b) Wrong
39. 39.Last-digit check: is 69 × 36 = 2484 right or wrong? (a) Right (b) Wrong
40. 40.Last-digit check: is 680 + 331 = 1011 right or wrong? (a) Wrong (b) Right

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