Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 9 · 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 164 =
2. 2.1 + 3 + 5 + … + 29 =
3. 3.Magic square (every row, column and diagonal has the same total): 8 1 6 | 3 5 7 | ? 9 2. What is the missing number?
4. 4.9 × 2 = 1? — what is the missing digit?
5. 5.The 3rd of a month is a Sunday. What day is the 18th of the same month? (a) Thursday (b) Tuesday (c) Sunday (d) Monday
6. 6.What comes next? 4, 8, 16, 32, ? (a) 65 (b) 64 (c) 48 (d) 56
7. 7.A father is 41 years old and his son is 7. How old was the father when the son was born?
8. 8.5 × 9 =
9. 9.The 7th of a month is a Tuesday. What day is the 17th of the same month? (a) Friday (b) Thursday (c) Monday (d) Saturday
10. 10.If today is Wednesday, what day will it be after 51 days? (a) Thursday (b) Monday (c) Saturday (d) Friday
11. 11.Take 67 and take away the sum of its digits. What do you get?
12. 12.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
13. 13.What comes next? 9, 12, 15, 18, ? (a) 24 (b) 22 (c) 21 (d) 18
14. 14.If today is Tuesday, what day was it 18 days ago? (a) Saturday (b) Monday (c) Thursday (d) Friday
15. 15.Half of 142 =
16. 16.1 + 3 + 5 + … + 35 =
17. 17.Magic square (every row, column and diagonal has the same total): 23 8 29 | 26 20 14 | 11 ? 17. What is the missing number?
18. 18.9 × 1 =
19. 19.46 × 100 =
20. 20.9 × 9 = ?1 — what is the missing digit?
21. 21.I thought of a number, added 1 and then doubled it. I got 8. What was my number?
22. 22.You have 15 coins. Each coin is ₹1 or ₹2, and together they make ₹27. How many ₹2 coins do you have?
23. 23.Magic trick! Think of 7. Double it, add 4, halve it, then take away 7. What number do you get?
24. 24.9 × 3 = 2? — what is the missing digit?
25. 25.34 × 4 =
26. 26.Take 73 and take away the sum of its digits. What do you get?
27. 27.I thought of a number, added 2 and then doubled it. I got 42. What was my number?
28. 28.80 × ? = 8000
29. 29.1 + 2 + 3 + … + 96 =
30. 30.Magic square (every row, column and diagonal has the same total): 27 6 21 | 12 18 ? | 15 30 9. What is the missing number?
31. 31.In the 1089 trick, the subtraction gave a 3-digit number that starts with 8. What is that number?
32. 32.411 × ? = 4110
33. 33.Take 86 and take away the sum of its digits. What do you get?
34. 34.9 × 10 = ?0 — what is the missing digit?
35. 35.1 + 2 + 3 + … + 61 =
36. 36.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
37. 37.1 + 3 + 5 + … + 13 =
38. 38.9 × 3 = ?7 — what is the missing digit?
39. 39.43 × 4 =
40. 40.Double 24 =

Free maths tricks lessons, practice and worksheets at talentjr.in/maths-tricks