Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 642 · 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. 1.12345679 × 18 =
2. 2.9 × 2 = 1? — what is the missing digit?
3. 3.6 × 9 =
4. 4.724 × 10 =
5. 5.Think of 4. Multiply it by 4, then add 4. What number do you end with?
6. 6.5?48 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
7. 7.Double 81 =
8. 8.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
9. 9.804? is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
10. 10.The ages of two twins add up to 18. How old is each twin?
11. 11.Magic square (every row, column and diagonal has the same total): 11 25 15 | 21 ? 13 | 19 9 23. What is the missing number?
12. 12.The 9th of a month is a Tuesday. What day is the 21st of the same month? (a) Monday (b) Saturday (c) Sunday (d) Wednesday
13. 13.A piggy bank has 8 coins of ₹5 and 14 coins of ₹2. How many rupees are in it?
14. 14.Double 53 =
15. 15.If today is Saturday, what day was it 57 days ago? (a) Thursday (b) Friday (c) Saturday (d) Monday
16. 16.Half of 166 =
17. 17.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
18. 18.36 × 4 =
19. 19.?112 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
20. 20.142 × 10 =
21. 21.In the 1089 trick, the subtraction gave a 3-digit number that starts with 2. What is that number?
22. 22.1 + 3 + 5 + … + 49 =
23. 23.Magic trick! Think of 14. Double it, add 14, halve it, then take away 14. What number do you get?
24. 24.Magic square (every row, column and diagonal has the same total): 11 ? 15 | 16 12 8 | 9 14 13. What is the missing number?
25. 25.Think of 6. Multiply it by 2, then add 1. What number do you end with?
26. 26.9 × 2 =
27. 27.123456 × 8 + 6 =
28. 28.Think of 2. Multiply it by 2, then add 6. What number do you end with?
29. 29.41 × 1000 =
30. 30.91 × 100 =
31. 31.1 + 2 + 3 + … + 7 =
32. 32.Take 85 and take away the sum of its digits. What do you get?
33. 33.Double 38 =
34. 34.Take 27 and take away the sum of its digits. What do you get?
35. 35.I thought of a number, multiplied it by 4 and added 4. I got 64. What was my number?
36. 36.In 2 years a boy will be 16 years old. How old was he 3 years ago?
37. 37.1 + 2 + 3 + … + 21 =
38. 38.9 × 8 =
39. 39.Magic square (every row, column and diagonal has the same total): 9 4 11 | 10 8 6 | ? 12 7. What is the missing number?
40. 40.3 × 9 =

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