Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 897 · 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.If today is Wednesday, what day will it be after 62 days? (a) Monday (b) Tuesday (c) Wednesday (d) Friday
2. 2.891 + 198 =
3. 3.Magic trick! Think of 3. Double it, add 6, halve it, then take away 3. What number do you get?
4. 4.Think of 6. Multiply it by 3, then add 5. What number do you end with?
5. 5.9 × 6 =
6. 6.Magic square (every row, column and diagonal has the same total): 10 3 ? | 5 7 9 | 6 11 4. What is the missing number?
7. 7.A girl is 12 years old and her brother is 5 years older. How old will her brother be in 6 years?
8. 8.12345679 × 45 =
9. 9.30?3 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
10. 10.Magic square (every row, column and diagonal has the same total): 9 24 21 | 30 ? 6 | 15 12 27. What is the missing number?
11. 11.1 + 2 + 3 + … + 92 =
12. 12.1 + 2 + 3 + … + 26 =
13. 13.Double 35 =
14. 14.9 × 5 = ?5 — what is the missing digit?
15. 15.Double 33 =
16. 16.What comes next? 15, 22, 29, 36, ? (a) 50 (b) 36 (c) 44 (d) 43
17. 17.You have 12 coins. Each coin is ₹1 or ₹2, and together they make ₹21. How many ₹2 coins do you have?
18. 18.In 4 years a boy will be 15 years old. How old was he 6 years ago?
19. 19.43 × 4 =
20. 20.In the 1089 trick, the subtraction gave a 3-digit number that starts with 7. What is that number?
21. 21.8 × 9 =
22. 22.Magic square (every row, column and diagonal has the same total): 5 10 3 | 4 6 8 | 9 ? 7. What is the missing number?
23. 23.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
24. 24.2 × 9 =
25. 25.46 × 4 =
26. 26.What comes next? 3, 5, 7, 9, ? (a) 12 (b) 11 (c) 13 (d) 9
27. 27.What comes next? 3, 6, 12, 24, ? (a) 48 (b) 49 (c) 36 (d) 42
28. 28.Magic square (every row, column and diagonal has the same total): 19 5 15 | 9 13 17 | ? 21 7. What is the missing number?
29. 29.1 + 2 + 3 + … + 82 =
30. 30.19 × 4 =
31. 31.1 + 2 + 3 + … + 58 =
32. 32.What comes next? 4, 9, 16, 25, ? (a) 38 (b) 37 (c) 34 (d) 36
33. 33.If today is Sunday, what day will it be after 78 days? (a) Thursday (b) Tuesday (c) Sunday (d) Monday
34. 34.?165 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
35. 35.9 × 10 = 9? — what is the missing digit?
36. 36.Double 53 =
37. 37.490? is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
38. 38.Magic square (every row, column and diagonal has the same total): 27 30 15 | ? 24 36 | 33 18 21. What is the missing number?
39. 39.37 × 9 =
40. 40.Take 660. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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