Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 52 · 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.Magic square (every row, column and diagonal has the same total): 26 11 14 | 5 17 29 | ? 23 8. What is the missing number?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
3. 3.A father is 44 years old and his son is 8. How old was the father when the son was born?
4. 4.27 × ? = 27000
5. 5.Magic trick! Think of 16. Double it, add 4, halve it, then take away 16. What number do you get?
6. 6.9 × 5 = ?5 — what is the missing digit?
7. 7.Magic square (every row, column and diagonal has the same total): ? 7 2 | 1 5 9 | 8 3 4. What is the missing number?
8. 8.693 + 396 =
9. 9.25 × 4 =
10. 10.Magic square (every row, column and diagonal has the same total): ? 22 12 | 10 18 26 | 24 14 16. What is the missing number?
11. 11.1 + 3 + 5 + … + 25 =
12. 12.The 2nd of a month is a Wednesday. What day is the 30th of the same month? (a) Wednesday (b) Thursday (c) Tuesday (d) Saturday
13. 13.46 × 4 =
14. 14.Magic square (every row, column and diagonal has the same total): 15 17 7 | 5 ? 21 | 19 9 11. What is the missing number?
15. 15.24 × 4 =
16. 16.Take 18 and take away the sum of its digits. What do you get?
17. 17.20 × 1000 =
18. 18.The 5th of a month is a Thursday. What day is the 13th of the same month? (a) Saturday (b) Thursday (c) Friday (d) Monday
19. 19.Half of 122 =
20. 20.I thought of a number, multiplied it by 4 and added 3. I got 59. What was my number?
21. 21.46 × 1000 =
22. 22.Magic square (every row, column and diagonal has the same total): 5 10 ? | 4 6 8 | 9 2 7. What is the missing number?
23. 23.Magic trick! Think of 2. Double it, add 16, halve it, then take away 2. What number do you get?
24. 24.Magic square (every row, column and diagonal has the same total): 12 27 24 | 33 21 ? | 18 15 30. What is the missing number?
25. 25.Magic square (every row, column and diagonal has the same total): 16 2 12 | ? 10 14 | 8 18 4. What is the missing number?
26. 26.1 + 2 + 3 + … + 86 =
27. 27.Take 138. Reverse its digits and take the smaller number away from the bigger one. What do you get?
28. 28.9 × 2 = ?8 — what is the missing digit?
29. 29.Think of 6. Multiply it by 3, then add 1. What number do you end with?
30. 30.9 × 1 =
31. 31.3?80 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
32. 32.Double 72 =
33. 33.37 × 3 =
34. 34.14 × ? = 14000
35. 35.590 × 10 =
36. 36.Magic square (every row, column and diagonal has the same total): ? 12 33 | 30 24 18 | 15 36 21. What is the missing number?
37. 37.The ages of two twins add up to 8. How old is each twin?
38. 38.Magic trick! Think of 9. Double it, add 12, halve it, then take away 9. What number do you get?
39. 39.You have 5 coins. Each coin is ₹1 or ₹2, and together they make ₹6. How many ₹2 coins do you have?
40. 40.56 × ? = 5600

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