Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 978 · 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.Half of 194 =
2. 2.1 + 2 + 3 + … + 83 =
3. 3.Magic square (every row, column and diagonal has the same total): 17 12 13 | 10 14 18 | ? 16 11. What is the missing number?
4. 4.Double 62 =
5. 5.Double 58 =
6. 6.What comes next? 13, 17, 21, 25, ? (a) 30 (b) 33 (c) 29 (d) 25
7. 7.9 × 10 =
8. 8.97 × ? = 9700
9. 9.You have 7 coins. Each coin is ₹1 or ₹2, and together they make ₹12. How many ₹2 coins do you have?
10. 10.If today is Saturday, what day was it 38 days ago? (a) Saturday (b) Wednesday (c) Thursday (d) Tuesday
11. 11.Magic square (every row, column and diagonal has the same total): 7 22 19 | ? 16 4 | 13 10 25. What is the missing number?
12. 12.A girl is 5 years old and her brother is 4 years older. How old will her brother be in 6 years?
13. 13.Magic square (every row, column and diagonal has the same total): 13 3 17 | 15 11 7 | ? 19 9. What is the missing number?
14. 14.In the 1089 trick, the subtraction gave a 3-digit number that starts with 3. What is that number?
15. 15.2 × 9 =
16. 16.Half of 182 =
17. 17.?82 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
18. 18.Take 78 and take away the sum of its digits. What do you get?
19. 19.36 × 4 =
20. 20.What comes next? 4, 8, 16, 32, ? (a) 65 (b) 56 (c) 48 (d) 64
21. 21.If today is Sunday, what day was it 46 days ago? (a) Tuesday (b) Saturday (c) Wednesday (d) Thursday
22. 22.9 × 8 = ?2 — what is the missing digit?
23. 23.53 × 100 =
24. 24.9 × 1 =
25. 25.17 × 4 =
26. 26.981 × 10 =
27. 27.If today is Monday, what day will it be after 51 days? (a) Saturday (b) Tuesday (c) Wednesday (d) Thursday
28. 28.Magic trick! Think of 18. Double it, add 6, halve it, then take away 18. What number do you get?
29. 29.693 + 396 =
30. 30.568? is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
31. 31.111111 × 111111 =
32. 32.If today is Saturday, what day was it 28 days ago? (a) Sunday (b) Tuesday (c) Friday (d) Saturday
33. 33.If today is Saturday, what day was it 56 days ago? (a) Saturday (b) Sunday (c) Tuesday (d) Friday
34. 34.25 × 4 =
35. 35.What comes next? 2, 4, 8, 16, ? (a) 24 (b) 32 (c) 33 (d) 28
36. 36.Do the 1089 trick with 670: reverse and subtract, then reverse that answer and add. What do you get?
37. 37.44 × 4 =
38. 38.9 × 9 =
39. 39.If today is Sunday, what day was it 17 days ago? (a) Wednesday (b) Thursday (c) Friday (d) Sunday
40. 40.Magic square (every row, column and diagonal has the same total): 14 9 10 | 7 11 15 | ? 13 8. What is the missing number?

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