Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 126 · 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. 1.582? is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
2. 2.What comes next? 6, 11, 16, 21, ? (a) 31 (b) 27 (c) 21 (d) 26
3. 3.If today is Friday, what day will it be after 23 days? (a) Monday (b) Wednesday (c) Saturday (d) Sunday
4. 4.11 × 4 =
5. 5.9 × 6 =
6. 6.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
7. 7.9 × 6 = 5? — what is the missing digit?
8. 8.752? is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
9. 9.9 × 4 = ?6 — what is the missing digit?
10. 10.9 × 10 = 9? — what is the missing digit?
11. 11.9 × 9 = ?1 — what is the missing digit?
12. 12.37 × 21 =
13. 13.Magic square (every row, column and diagonal has the same total): 16 9 ? | 11 13 15 | 12 17 10. What is the missing number?
14. 14.1 + 3 + 5 + … + 19 =
15. 15.What comes next? 16, 25, 36, 49, ? (a) 65 (b) 64 (c) 66 (d) 62
16. 16.12345 × 9 + 6 =
17. 17.Take 23 and take away the sum of its digits. What do you get?
18. 18.1 + 3 + 5 + … + 43 =
19. 19.1 + 2 + 3 + … + 95 =
20. 20.Think of 3. Multiply it by 4, then add 9. What number do you end with?
21. 21.1 + 2 + 3 + … + 48 =
22. 22.Double 89 =
23. 23.If today is Tuesday, what day will it be after 19 days? (a) Monday (b) Saturday (c) Sunday (d) Wednesday
24. 24.The ages of two twins add up to 28. How old is each twin?
25. 25.Half of 62 =
26. 26.9 × 8 =
27. 27.1 + 2 + 3 + … + 26 =
28. 28.8 × 4 =
29. 29.561 × 10 =
30. 30.A piggy bank has 4 coins of ₹5 and 2 coins of ₹2. How many rupees are in it?
31. 31.?939 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
32. 32.If today is Monday, what day was it 53 days ago? (a) Thursday (b) Sunday (c) Friday (d) Wednesday
33. 33.891 + 198 =
34. 34.1234567 × 9 + 8 =
35. 35.9 × 1 =
36. 36.A girl is 8 years old and her brother is 2 years older. How old will her brother be in 8 years?
37. 37.9 × 9 = 8? — what is the missing digit?
38. 38.Take 50 and take away the sum of its digits. What do you get?
39. 39.Double 85 =
40. 40.9 × 8 = ?2 — what is the missing digit?

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