Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 710 · 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. 1.10 × 9 =
2. 2.50 × 4 =
3. 3.9 × 6 =
4. 4.1 + 2 + 3 + … + 75 =
5. 5.If today is Saturday, what day was it 42 days ago? (a) Sunday (b) Tuesday (c) Saturday (d) Friday
6. 6.What comes next? 9, 11, 13, 15, ? (a) 15 (b) 19 (c) 18 (d) 17
7. 7.Magic square (every row, column and diagonal has the same total): 12 17 10 | 11 13 15 | 16 ? 14. What is the missing number?
8. 8.28 × 100 =
9. 9.A girl is 7 years old and her brother is 5 years older. How old will her brother be in 3 years?
10. 10.Magic square (every row, column and diagonal has the same total): ? 3 13 | 7 11 15 | 9 19 5. What is the missing number?
11. 11.In the 1089 trick, the subtraction gave a 3-digit number that starts with 4. What is that number?
12. 12.36 × 4 =
13. 13.46 × 4 =
14. 14.23 × 100 =
15. 15.9 × 6 = ?4 — what is the missing digit?
16. 16.Think of 15. Multiply it by 4, then add 6. What number do you end with?
17. 17.Think of 13. Multiply it by 2, then add 4. What number do you end with?
18. 18.Take 62 and take away the sum of its digits. What do you get?
19. 19.1234 × 8 + 4 =
20. 20.631 × ? = 6310
21. 21.56 × 4 =
22. 22.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
23. 23.Magic trick! Think of 6. Double it, add 6, halve it, then take away 6. What number do you get?
24. 24.Take 60 and take away the sum of its digits. What do you get?
25. 25.9 × 6 = 5? — what is the missing digit?
26. 26.1 + 2 + 3 + … + 76 =
27. 27.9 × 2 =
28. 28.A girl is 11 years old and her brother is 3 years older. How old will her brother be in 5 years?
29. 29.14 × 1000 =
30. 30.37 × 9 =
31. 31.1 + 2 + 3 + … + 9 =
32. 32.9 × 2 = ?8 — what is the missing digit?
33. 33.I thought of a number, added 1 and then doubled it. I got 38. What was my number?
34. 34.Magic square (every row, column and diagonal has the same total): 4 18 8 | 14 10 6 | ? 2 16. What is the missing number?
35. 35.123 × 9 + 4 =
36. 36.1 + 2 + 3 + … + 73 =
37. 37.Do the 1089 trick with 156: reverse and subtract, then reverse that answer and add. What do you get?
38. 38.9 × 3 = ?7 — what is the missing digit?
39. 39.1 + 3 + 5 + … + 47 =
40. 40.1 + 3 + 5 + … + 13 =

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