Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 59 · 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.In 2 years a boy will be 12 years old. How old was he 3 years ago?
2. 2.1 + 2 + 3 + … + 86 =
3. 3.9 × 8 =
4. 4.9 × 1 =
5. 5.54?1 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
6. 6.?026 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
7. 7.The 5th of a month is a Sunday. What day is the 29th of the same month? (a) Saturday (b) Thursday (c) Tuesday (d) Wednesday
8. 8.9 × 2 = ?8 — what is the missing digit?
9. 9.?892 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
10. 10.20 × 100 =
11. 11.Double 15 =
12. 12.12 × 9 + 3 =
13. 13.9 × 9 = ?1 — what is the missing digit?
14. 14.1 × 9 =
15. 15.If today is Saturday, what day was it 17 days ago? (a) Wednesday (b) Saturday (c) Thursday (d) Tuesday
16. 16.Magic square (every row, column and diagonal has the same total): 19 4 25 | 22 16 ? | 7 28 13. What is the missing number?
17. 17.42 × 4 =
18. 18.If today is Monday, what day will it be after 59 days? (a) Sunday (b) Thursday (c) Friday (d) Wednesday
19. 19.In the 1089 trick, the subtraction gave a 3-digit number that starts with 6. What is that number?
20. 20.Take 71 and take away the sum of its digits. What do you get?
21. 21.9 × 6 = 5? — what is the missing digit?
22. 22.You have 15 coins. Each coin is ₹1 or ₹2, and together they make ₹16. How many ₹2 coins do you have?
23. 23.Magic square (every row, column and diagonal has the same total): 21 ? 33 | 36 24 12 | 15 30 27. What is the missing number?
24. 24.If today is Sunday, what day will it be after 45 days? (a) Wednesday (b) Tuesday (c) Thursday (d) Saturday
25. 25.If today is Friday, what day will it be after 56 days? (a) Friday (b) Thursday (c) Saturday (d) Monday
26. 26.?937 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
27. 27.If today is Wednesday, what day was it 50 days ago? (a) Friday (b) Monday (c) Wednesday (d) Tuesday
28. 28.In 3 years a boy will be 12 years old. How old was he 7 years ago?
29. 29.Magic square (every row, column and diagonal has the same total): 23 8 29 | 26 20 14 | 11 32 ?. What is the missing number?
30. 30.In 2 years a boy will be 11 years old. How old was he 3 years ago?
31. 31.In 4 years a boy will be 13 years old. How old was he 3 years ago?
32. 32.What comes next? 1, 4, 9, 16, ? (a) 23 (b) 27 (c) 26 (d) 25
33. 33.9 × 8 = ?2 — what is the missing digit?
34. 34.Magic square (every row, column and diagonal has the same total): ? 6 27 | 24 18 12 | 9 30 15. What is the missing number?
35. 35.35 × 4 =
36. 36.9 × 10 = 9? — what is the missing digit?
37. 37.If today is Monday, what day will it be after 78 days? (a) Monday (b) Friday (c) Wednesday (d) Tuesday
38. 38.The 7th of a month is a Thursday. What day is the 17th of the same month? (a) Saturday (b) Monday (c) Sunday (d) Wednesday
39. 39.67?3 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
40. 40.36 × ? = 36000

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