Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 26 · 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 72 =
2. 2.Odd one out: which number is NOT in the 6 times table? (a) 24 (b) 12 (c) 41 (d) 18
3. 3.9 × 3 = ?7 — what is the missing digit?
4. 4.If today is Sunday, what day will it be after 31 days? (a) Saturday (b) Thursday (c) Tuesday (d) Wednesday
5. 5.Odd one out: which number is NOT in the 8 times table? (a) 24 (b) 16 (c) 22 (d) 32
6. 6.9 × 7 =
7. 7.What comes next? 3, 5, 7, 9, ? (a) 11 (b) 13 (c) 12 (d) 9
8. 8.23 × 4 =
9. 9.9 × 4 = ?6 — what is the missing digit?
10. 10.Odd one out: which number is NOT in the 4 times table? (a) 16 (b) 20 (c) 15 (d) 24
11. 11.Double 14 =
12. 12.What comes next? 1, 10, 19, 28, ? (a) 46 (b) 28 (c) 38 (d) 37
13. 13.If today is Wednesday, what day was it 37 days ago? (a) Tuesday (b) Monday (c) Sunday (d) Thursday
14. 14.Think of 8. Multiply it by 4, then add 9. What number do you end with?
15. 15.?185 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
16. 16.Magic square (every row, column and diagonal has the same total): 6 13 8 | 11 9 ? | 10 5 12. What is the missing number?
17. 17.Magic square (every row, column and diagonal has the same total): 12 27 6 | 9 15 ? | 24 3 18. What is the missing number?
18. 18.9 × 10 = ?0 — what is the missing digit?
19. 19.Half of 102 =
20. 20.I thought of a number, multiplied it by 3 and added 6. I got 21. What was my number?
21. 21.37 × 15 =
22. 22.Half of 104 =
23. 23.1 + 2 + 3 + … + 58 =
24. 24.Think of 4. Multiply it by 4, then add 6. What number do you end with?
25. 25.5 × 1000 =
26. 26.9 × 10 =
27. 27.What comes next? 5, 10, 20, 40, ? (a) 60 (b) 80 (c) 81 (d) 70
28. 28.1 + 2 + 3 + … + 66 =
29. 29.1 + 2 + 3 + … + 87 =
30. 30.If today is Tuesday, what day will it be after 13 days? (a) Sunday (b) Thursday (c) Monday (d) Tuesday
31. 31.Take 450. Reverse its digits and take the smaller number away from the bigger one. What do you get?
32. 32.If today is Monday, what day will it be after 38 days? (a) Wednesday (b) Friday (c) Thursday (d) Sunday
33. 33.Magic square (every row, column and diagonal has the same total): 30 15 18 | ? 21 33 | 24 27 12. What is the missing number?
34. 34.Magic square (every row, column and diagonal has the same total): 13 ? 9 | 8 12 16 | 15 10 11. What is the missing number?
35. 35.1 + 3 + 5 + … + 43 =
36. 36.Magic square (every row, column and diagonal has the same total): 14 11 26 | 29 17 5 | ? 23 20. What is the missing number?
37. 37.A girl is 12 years old and her brother is 2 years older. How old will her brother be in 4 years?
38. 38.A father is 41 years old and his son is 10. How old was the father when the son was born?
39. 39.9 × 2 =
40. 40.Take 87 and take away the sum of its digits. What do you get?

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