Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 684 · 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.If today is Monday, what day will it be after 15 days? (a) Monday (b) Wednesday (c) Friday (d) Tuesday
2. 2.I thought of a number, multiplied it by 2 and added 2. I got 16. What was my number?
3. 3.76 × 10 =
4. 4.51 × 4 =
5. 5.4 × 9 =
6. 6.What comes next? 17, 21, 25, 29, ? (a) 29 (b) 34 (c) 33 (d) 37
7. 7.I thought of a number, added 6 and then doubled it. I got 42. What was my number?
8. 8.If today is Friday, what day was it 10 days ago? (a) Tuesday (b) Wednesday (c) Monday (d) Friday
9. 9.19 × 4 =
10. 10.58 × 100 =
11. 11.What comes next? 1, 4, 9, 16, ? (a) 23 (b) 25 (c) 26 (d) 27
12. 12.What comes next? 3, 6, 12, 24, ? (a) 49 (b) 42 (c) 48 (d) 36
13. 13.694 × 10 =
14. 14.Think of 7. Multiply it by 2, then add 2. What number do you end with?
15. 15.2 × 9 =
16. 16.I thought of a number, multiplied it by 3 and added 3. I got 15. What was my number?
17. 17.Magic trick! Think of 16. Double it, add 14, halve it, then take away 16. What number do you get?
18. 18.What comes next? 5, 10, 20, 40, ? (a) 80 (b) 70 (c) 81 (d) 60
19. 19.5 × 9 =
20. 20.?821 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
21. 21.367 × ? = 3670
22. 22.Half of 114 =
23. 23.Magic square (every row, column and diagonal has the same total): 17 27 13 | 15 19 23 | ? 11 21. What is the missing number?
24. 24.Take 820. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.Double 81 =
26. 26.9 × 8 =
27. 27.Magic trick! Think of 2. Double it, add 16, halve it, then take away 2. What number do you get?
28. 28.9 × 2 =
29. 29.If today is Monday, what day was it 36 days ago? (a) Sunday (b) Saturday (c) Wednesday (d) Monday
30. 30.I thought of a number, added 2 and then doubled it. I got 14. What was my number?
31. 31.9 × 3 =
32. 32.You have 8 coins. Each coin is ₹1 or ₹2, and together they make ₹10. How many ₹2 coins do you have?
33. 33.1234 × 9 + 5 =
34. 34.37 × 24 =
35. 35.48 × 4 =
36. 36.A piggy bank has 10 coins of ₹5 and 5 coins of ₹2. How many rupees are in it?
37. 37.8 × 4 =
38. 38.Magic square (every row, column and diagonal has the same total): 6 7 2 | ? 5 9 | 8 3 4. What is the missing number?
39. 39.87 × 10 =
40. 40.38 × ? = 38000

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