Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 969 · 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. 1.31 × 100 =
2. 2.9 × 4 = ?6 — what is the missing digit?
3. 3.The 8th of a month is a Tuesday. What day is the 27th of the same month? (a) Monday (b) Wednesday (c) Saturday (d) Sunday
4. 4.Magic square (every row, column and diagonal has the same total): 10 24 14 | ? 16 12 | 18 8 22. What is the missing number?
5. 5.Odd one out: which number is NOT in the 4 times table? (a) 16 (b) 12 (c) 35 (d) 8
6. 6.A piggy bank has 8 coins of ₹5 and 5 coins of ₹2. How many rupees are in it?
7. 7.9 × 1 =
8. 8.Magic trick! Think of 9. Double it, add 18, halve it, then take away 9. What number do you get?
9. 9.297 + 792 =
10. 10.9 × 8 =
11. 11.457 × 10 =
12. 12.Double 48 =
13. 13.In 3 years a boy will be 16 years old. How old was he 2 years ago?
14. 14.9 × 2 =
15. 15.Think of 14. Multiply it by 5, then add 3. What number do you end with?
16. 16.9 × 2 = ?8 — what is the missing digit?
17. 17.Magic square (every row, column and diagonal has the same total): 10 3 8 | 5 7 9 | 6 11 ?. What is the missing number?
18. 18.23 × 4 =
19. 19.Do the 1089 trick with 167: reverse and subtract, then reverse that answer and add. What do you get?
20. 20.Double 37 =
21. 21.111 × 111 =
22. 22.?319 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
23. 23.5 × 9 =
24. 24.13 × 1000 =
25. 25.9 × 6 =
26. 26.Double 44 =
27. 27.Double 51 =
28. 28.48 × 100 =
29. 29.You have 5 coins. Each coin is ₹1 or ₹2, and together they make ₹6. How many ₹2 coins do you have?
30. 30.Magic square (every row, column and diagonal has the same total): 7 ? 9 | 12 10 8 | 11 6 13. What is the missing number?
31. 31.Double 31 =
32. 32.2 × 9 =
33. 33.9 × 3 = ?7 — what is the missing digit?
34. 34.1 + 3 + 5 + … + 29 =
35. 35.25 × 1000 =
36. 36.7?0 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
37. 37.37 × 6 =
38. 38.Magic square (every row, column and diagonal has the same total): 9 7 17 | 19 11 3 | 5 15 ?. What is the missing number?
39. 39.Do the 1089 trick with 981: reverse and subtract, then reverse that answer and add. What do you get?
40. 40.?735 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?

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