Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 463 · 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. 1.12345679 × 45 =
2. 2.Odd one out: which number is NOT in the 6 times table? (a) 36 (b) 31 (c) 18 (d) 24
3. 3.27 × 4 =
4. 4.9 × 2 = ?8 — what is the missing digit?
5. 5.The ages of two twins add up to 28. How old is each twin?
6. 6.48 × 4 =
7. 7.The ages of two twins add up to 8. How old is each twin?
8. 8.The 2nd of a month is a Monday. What day is the 17th of the same month? (a) Friday (b) Monday (c) Tuesday (d) Wednesday
9. 9.Take 950. Reverse its digits and take the smaller number away from the bigger one. What do you get?
10. 10.15 × 4 =
11. 11.1234567 × 8 + 7 =
12. 12.A piggy bank has 5 coins of ₹5 and 3 coins of ₹2. How many rupees are in it?
13. 13.Half of 38 =
14. 14.Magic trick! Think of 4. Double it, add 12, halve it, then take away 4. What number do you get?
15. 15.A piggy bank has 3 coins of ₹5 and 8 coins of ₹2. How many rupees are in it?
16. 16.Double 66 =
17. 17.9 × 4 = 3? — what is the missing digit?
18. 18.Double 54 =
19. 19.Take 93 and take away the sum of its digits. What do you get?
20. 20.Double 43 =
21. 21.Double 52 =
22. 22.If today is Sunday, what day was it 55 days ago? (a) Sunday (b) Thursday (c) Monday (d) Tuesday
23. 23.Double 15 =
24. 24.12345678 × 9 + 9 =
25. 25.25 × ? = 25000
26. 26.Magic trick! Think of 15. Double it, add 18, halve it, then take away 15. What number do you get?
27. 27.I thought of a number, multiplied it by 2 and added 7. I got 23. What was my number?
28. 28.12345679 × 54 =
29. 29.A father is 41 years old and his son is 9. How old was the father when the son was born?
30. 30.52 × 4 =
31. 31.8?31 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
32. 32.69 × 100 =
33. 33.10 × 4 =
34. 34.9 × 10 = ?0 — what is the missing digit?
35. 35.A father is 33 years old and his son is 10. How old was the father when the son was born?
36. 36.If today is Monday, what day was it 32 days ago? (a) Sunday (b) Wednesday (c) Thursday (d) Friday
37. 37.Odd one out: which number is NOT in the 6 times table? (a) 30 (b) 42 (c) 12 (d) 28
38. 38.Take 297. Reverse its digits and take the smaller number away from the bigger one. What do you get?
39. 39.9 × 100 =
40. 40.693 + 396 =

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