Check Your Answers Worksheet

Maths tricks trick 22: Last-digit detective · Set 864 · 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 665 + 395 = 1066 right or wrong? (a) Right (b) Wrong
2. 2.Last-digit check: is 520 + 232 = 760 right or wrong? (a) Wrong (b) Right
3. 3.Last-digit check: is 26 × 58 = 1502 right or wrong? (a) Wrong (b) Right
4. 4.Last-digit check: is 554 + 245 = 799 right or wrong? (a) Right (b) Wrong
5. 5.Last-digit check: is 997 + 802 = 1790 right or wrong? (a) Wrong (b) Right
6. 6.Last-digit check: is 29 × 18 = 522 right or wrong? (a) Right (b) Wrong
7. 7.Last-digit check: is 514 + 699 = 1213 right or wrong? (a) Right (b) Wrong
8. 8.Last-digit check: is 836 + 235 = 1069 right or wrong? (a) Right (b) Wrong
9. 9.Last-digit check: is 15 × 94 = 1410 right or wrong? (a) Right (b) Wrong
10. 10.Last-digit check: is 335 + 335 = 671 right or wrong? (a) Wrong (b) Right
11. 11.Last-digit check: is 374 + 780 = 1154 right or wrong? (a) Wrong (b) Right
12. 12.Last-digit check: is 32 × 73 = 2332 right or wrong? (a) Wrong (b) Right
13. 13.Last-digit check: is 81 × 72 = 5832 right or wrong? (a) Wrong (b) Right
14. 14.Last-digit check: is 34 × 27 = 918 right or wrong? (a) Right (b) Wrong
15. 15.Last-digit check: is 978 + 444 = 1420 right or wrong? (a) Wrong (b) Right
16. 16.Last-digit check: is 14 × 50 = 700 right or wrong? (a) Wrong (b) Right
17. 17.Last-digit check: is 979 + 583 = 1562 right or wrong? (a) Wrong (b) Right
18. 18.Last-digit check: is 54 × 12 = 648 right or wrong? (a) Wrong (b) Right
19. 19.Last-digit check: is 326 + 536 = 853 right or wrong? (a) Wrong (b) Right
20. 20.Last-digit check: is 34 × 37 = 1260 right or wrong? (a) Wrong (b) Right
21. 21.Last-digit check: is 15 × 74 = 1115 right or wrong? (a) Right (b) Wrong
22. 22.Last-digit check: is 359 + 516 = 874 right or wrong? (a) Wrong (b) Right
23. 23.Last-digit check: is 852 + 617 = 1467 right or wrong? (a) Right (b) Wrong
24. 24.Last-digit check: is 632 + 686 = 1316 right or wrong? (a) Wrong (b) Right
25. 25.Last-digit check: is 77 × 84 = 6467 right or wrong? (a) Wrong (b) Right
26. 26.Last-digit check: is 713 + 169 = 882 right or wrong? (a) Wrong (b) Right
27. 27.Last-digit check: is 363 + 111 = 466 right or wrong? (a) Right (b) Wrong
28. 28.Last-digit check: is 257 + 147 = 404 right or wrong? (a) Right (b) Wrong
29. 29.Last-digit check: is 24 × 42 = 1008 right or wrong? (a) Right (b) Wrong
30. 30.Last-digit check: is 31 × 75 = 2325 right or wrong? (a) Right (b) Wrong
31. 31.Last-digit check: is 803 + 540 = 1334 right or wrong? (a) Wrong (b) Right
32. 32.Last-digit check: is 64 × 14 = 896 right or wrong? (a) Wrong (b) Right
33. 33.Last-digit check: is 59 × 19 = 1121 right or wrong? (a) Wrong (b) Right
34. 34.Last-digit check: is 760 + 993 = 1747 right or wrong? (a) Wrong (b) Right
35. 35.Last-digit check: is 31 × 74 = 2294 right or wrong? (a) Right (b) Wrong
36. 36.Last-digit check: is 631 + 594 = 1225 right or wrong? (a) Wrong (b) Right
37. 37.Last-digit check: is 471 + 206 = 671 right or wrong? (a) Wrong (b) Right
38. 38.Last-digit check: is 205 + 324 = 538 right or wrong? (a) Right (b) Wrong
39. 39.Last-digit check: is 33 × 93 = 3069 right or wrong? (a) Wrong (b) Right
40. 40.Last-digit check: is 403 + 223 = 626 right or wrong? (a) Right (b) Wrong

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