Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 150 · 40 questions

The trick (Choose a trick): × 9 → finger trick; × 4 → double double; × 10, 100, 1000 → slide and add zeros. 37, 12345679 or 111… → magic patterns; reverse and subtract → 1089. Puzzles: find the rule, the total or the leftover days, then check your answer.

1. 1.Half of 132 =
2. 2.9 × 4 =
3. 3.I thought of a number, multiplied it by 3 and added 4. I got 43. What was my number?
4. 4.What comes next? 15, 22, 29, 36, ? (a) 50 (b) 36 (c) 44 (d) 43
5. 5.I thought of a number, multiplied it by 4 and added 9. I got 65. What was my number?
6. 6.The 1st of a month is a Friday. What day is the 18th of the same month? (a) Thursday (b) Monday (c) Sunday (d) Tuesday
7. 7.9 × 9 =
8. 8.If today is Thursday, what day will it be after 61 days? (a) Monday (b) Wednesday (c) Friday (d) Tuesday
9. 9.37 × 6 =
10. 10.8 × 9 =
11. 11.A father is 34 years old and his son is 5. How old was the father when the son was born?
12. 12.14 × 10 =
13. 13.16 × 4 =
14. 14.Odd one out: which number is NOT in the 9 times table? (a) 36 (b) 76 (c) 54 (d) 63
15. 15.Take 31 and take away the sum of its digits. What do you get?
16. 16.9 × 9 = ?1 — what is the missing digit?
17. 17.A father is 32 years old and his son is 12. How old was the father when the son was born?
18. 18.Take 73 and take away the sum of its digits. What do you get?
19. 19.Magic square (every row, column and diagonal has the same total): 13 18 11 | 12 ? 16 | 17 10 15. What is the missing number?
20. 20.934 × ? = 9340
21. 21.Half of 26 =
22. 22.9 × 4 = 3? — what is the missing digit?
23. 23.In 4 years a boy will be 12 years old. How old was he 4 years ago?
24. 24.9 × 7 = 6? — what is the missing digit?
25. 25.Take 931. Reverse its digits and take the smaller number away from the bigger one. What do you get?
26. 26.Half of 192 =
27. 27.Half of 188 =
28. 28.9 × 2 = ?8 — what is the missing digit?
29. 29.Magic square (every row, column and diagonal has the same total): 11 6 7 | 4 8 12 | 9 ? 5. What is the missing number?
30. 30.Odd one out: which number is NOT in the 9 times table? (a) 27 (b) 18 (c) 36 (d) 20
31. 31.The 6th of a month is a Friday. What day is the 27th of the same month? (a) Thursday (b) Friday (c) Saturday (d) Monday
32. 32.9 × 2 =
33. 33.22 × 4 =
34. 34.15 × 4 =
35. 35.37 × 27 =
36. 36.Half of 32 =
37. 37.I thought of a number, multiplied it by 3 and added 4. I got 31. What was my number?
38. 38.792 + 297 =
39. 39.What comes next? 16, 19, 22, 25, ? (a) 29 (b) 28 (c) 31 (d) 25
40. 40.A girl is 10 years old and her brother is 3 years older. How old will her brother be in 4 years?

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