Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 948 · 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. 1.373 × ? = 3730
2. 2.The ages of two twins add up to 26. How old is each twin?
3. 3.1 + 2 + 3 + … + 85 =
4. 4.1 + 3 + 5 + … + 17 =
5. 5.What comes next? 4, 9, 16, 25, ? (a) 37 (b) 36 (c) 38 (d) 34
6. 6.Do the 1089 trick with 356: reverse and subtract, then reverse that answer and add. What do you get?
7. 7.9 × 9 =
8. 8.If today is Tuesday, what day will it be after 12 days? (a) Sunday (b) Monday (c) Saturday (d) Wednesday
9. 9.You have 6 coins. Each coin is ₹1 or ₹2, and together they make ₹11. How many ₹2 coins do you have?
10. 10.1 + 2 + 3 + … + 29 =
11. 11.If today is Monday, what day will it be after 34 days? (a) Monday (b) Saturday (c) Sunday (d) Wednesday
12. 12.9 × 4 = 3? — what is the missing digit?
13. 13.I thought of a number, added 5 and then doubled it. I got 46. What was my number?
14. 14.Magic square (every row, column and diagonal has the same total): 21 ? 15 | 18 24 30 | 33 12 27. What is the missing number?
15. 15.I thought of a number, multiplied it by 5 and added 2. I got 22. What was my number?
16. 16.Magic square (every row, column and diagonal has the same total): 14 9 10 | 7 11 15 | 12 ? 8. What is the missing number?
17. 17.198 + 891 =
18. 18.Magic square (every row, column and diagonal has the same total): 24 3 18 | 9 ? 21 | 12 27 6. What is the missing number?
19. 19.1 + 3 + 5 + … + 31 =
20. 20.929 × 10 =
21. 21.Magic square (every row, column and diagonal has the same total): 29 14 17 | 8 20 32 | 23 ? 11. What is the missing number?
22. 22.1 + 3 + 5 + … + 49 =
23. 23.16 × 1000 =
24. 24.A girl is 6 years old and her brother is 2 years older. How old will her brother be in 3 years?
25. 25.10 × 9 =
26. 26.A father is 38 years old and his son is 5. How old was the father when the son was born?
27. 27.The 4th of a month is a Tuesday. What day is the 21st of the same month? (a) Monday (b) Saturday (c) Friday (d) Thursday
28. 28.Magic square (every row, column and diagonal has the same total): 7 ? 9 | 8 6 4 | 3 10 5. What is the missing number?
29. 29.The 3rd of a month is a Saturday. What day is the 28th of the same month? (a) Saturday (b) Thursday (c) Wednesday (d) Tuesday
30. 30.533? is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
31. 31.711 × 10 =
32. 32.3 × 9 =
33. 33.1 × 9 =
34. 34.If today is Thursday, what day will it be after 24 days? (a) Saturday (b) Wednesday (c) Monday (d) Sunday
35. 35.Take 51 and take away the sum of its digits. What do you get?
36. 36.15 × 1000 =
37. 37.Double 95 =
38. 38.If today is Friday, what day will it be after 38 days? (a) Tuesday (b) Thursday (c) Monday (d) Sunday
39. 39.If today is Thursday, what day will it be after 21 days? (a) Sunday (b) Wednesday (c) Friday (d) Thursday
40. 40.Think of 12. Multiply it by 4, then add 4. What number do you end with?

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