Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 941 · 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.Odd one out: which number is NOT in the 6 times table? (a) 30 (b) 48 (c) 12 (d) 15
2. 2.350 × 10 =
3. 3.Magic trick! Think of 8. Double it, add 12, halve it, then take away 8. What number do you get?
4. 4.11 × 4 =
5. 5.16 × 1000 =
6. 6.The 3rd of a month is a Saturday. What day is the 28th of the same month? (a) Saturday (b) Tuesday (c) Wednesday (d) Thursday
7. 7.224? is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
8. 8.6 × 9 =
9. 9.Odd one out: which number is NOT in the 3 times table? (a) 9 (b) 12 (c) 15 (d) 11
10. 10.What comes next? 13, 16, 19, 22, ? (a) 28 (b) 25 (c) 22 (d) 26
11. 11.9 × 3 = 2? — what is the missing digit?
12. 12.9 × 10 = 9? — what is the missing digit?
13. 13.792 + 297 =
14. 14.9 × 5 =
15. 15.9 × 4 = 3? — what is the missing digit?
16. 16.I thought of a number, multiplied it by 3 and added 3. I got 36. What was my number?
17. 17.1 + 2 + 3 + … + 93 =
18. 18.922 × 10 =
19. 19.Magic square (every row, column and diagonal has the same total): 33 18 ? | 12 24 36 | 27 30 15. What is the missing number?
20. 20.If today is Monday, what day was it 17 days ago? (a) Friday (b) Monday (c) Saturday (d) Thursday
21. 21.11 × 1000 =
22. 22.37 × 24 =
23. 23.Double 73 =
24. 24.1 + 2 + 3 + … + 92 =
25. 25.19 × 1000 =
26. 26.I thought of a number, added 4 and then doubled it. I got 18. What was my number?
27. 27.1 + 2 + 3 + … + 77 =
28. 28.91 × ? = 9100
29. 29.89?0 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
30. 30.If today is Tuesday, what day was it 19 days ago? (a) Thursday (b) Friday (c) Wednesday (d) Sunday
31. 31.47 × 1000 =
32. 32.485 × 10 =
33. 33.If today is Monday, what day will it be after 48 days? (a) Saturday (b) Monday (c) Sunday (d) Wednesday
34. 34.1 + 2 + 3 + … + 6 =
35. 35.Magic square (every row, column and diagonal has the same total): 15 5 19 | 17 13 9 | ? 21 11. What is the missing number?
36. 36.9 × 8 = 7? — what is the missing digit?
37. 37.Think of 7. Multiply it by 4, then add 4. What number do you end with?
38. 38.Odd one out: which number is NOT in the 5 times table? (a) 48 (b) 30 (c) 10 (d) 25
39. 39.If today is Friday, what day was it 8 days ago? (a) Friday (b) Sunday (c) Thursday (d) Wednesday
40. 40.6?5 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?

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