Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 495 · 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.Take 20 and take away the sum of its digits. What do you get?
2. 2.In the 1089 trick, the subtraction gave a 3-digit number that starts with 5. What is that number?
3. 3.12 × 100 =
4. 4.Odd one out: which number is NOT in the 3 times table? (a) 16 (b) 15 (c) 18 (d) 12
5. 5.If today is Monday, what day will it be after 67 days? (a) Monday (b) Friday (c) Thursday (d) Saturday
6. 6.I thought of a number, multiplied it by 3 and added 5. I got 50. What was my number?
7. 7.Think of 6. Multiply it by 2, then add 3. What number do you end with?
8. 8.12345679 × 27 =
9. 9.1111 × 1111 =
10. 10.209 × 10 =
11. 11.I thought of a number, added 8 and then doubled it. I got 44. What was my number?
12. 12.?287 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
13. 13.1 + 2 + 3 + … + 29 =
14. 14.56 × 4 =
15. 15.Take 75 and take away the sum of its digits. What do you get?
16. 16.56 × 100 =
17. 17.A girl is 7 years old and her brother is 2 years older. How old will her brother be in 8 years?
18. 18.A piggy bank has 12 coins of ₹5 and 5 coins of ₹2. How many rupees are in it?
19. 19.12345679 × 72 =
20. 20.Take 270. Reverse its digits and take the smaller number away from the bigger one. What do you get?
21. 21.What comes next? 9, 16, 25, 36, ? (a) 47 (b) 50 (c) 51 (d) 49
22. 22.1 + 2 + 3 + … + 21 =
23. 23.51?3 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
24. 24.What comes next? 36, 49, 64, 81, ? (a) 102 (b) 100 (c) 98 (d) 101
25. 25.17?8 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
26. 26.Do the 1089 trick with 459: reverse and subtract, then reverse that answer and add. What do you get?
27. 27.Magic trick! Think of 7. Double it, add 18, halve it, then take away 7. What number do you get?
28. 28.6 × 9 =
29. 29.Think of 14. Multiply it by 2, then add 1. What number do you end with?
30. 30.Half of 122 =
31. 31.?889 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
32. 32.1 + 3 + 5 + … + 43 =
33. 33.Magic square (every row, column and diagonal has the same total): 13 14 ? | 8 12 16 | 15 10 11. What is the missing number?
34. 34.I thought of a number, added 5 and then doubled it. I got 34. What was my number?
35. 35.123 × 9 + 4 =
36. 36.1 + 2 + 3 + … + 43 =
37. 37.Magic square (every row, column and diagonal has the same total): 11 4 9 | ? 8 10 | 7 12 5. What is the missing number?
38. 38.If today is Saturday, what day will it be after 89 days? (a) Friday (b) Thursday (c) Wednesday (d) Sunday
39. 39.In the 1089 trick, the subtraction gave a 3-digit number that starts with 1. What is that number?
40. 40.1 + 2 + 3 + … + 59 =

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