Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 776 · 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.Magic trick! Think of 13. Double it, add 4, halve it, then take away 13. What number do you get?
2. 2.46 × 1000 =
3. 3.27 × 4 =
4. 4.Magic square (every row, column and diagonal has the same total): 23 13 ? | 9 17 25 | 19 21 11. What is the missing number?
5. 5.27?8 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
6. 6.2 × 9 =
7. 7.792 + 297 =
8. 8.817 × 10 =
9. 9.57 × 4 =
10. 10.You have 6 coins. Each coin is ₹1 or ₹2, and together they make ₹8. How many ₹2 coins do you have?
11. 11.Magic square (every row, column and diagonal has the same total): 7 14 9 | ? 10 8 | 11 6 13. What is the missing number?
12. 12.17 × 1000 =
13. 13.6 × 4 =
14. 14.A piggy bank has 3 coins of ₹5 and 12 coins of ₹2. How many rupees are in it?
15. 15.1234 × 8 + 4 =
16. 16.Double 21 =
17. 17.What comes next? 9, 16, 25, 36, ? (a) 51 (b) 50 (c) 47 (d) 49
18. 18.A girl is 9 years old and her brother is 2 years older. How old will her brother be in 4 years?
19. 19.If today is Sunday, what day was it 40 days ago? (a) Tuesday (b) Wednesday (c) Friday (d) Monday
20. 20.Odd one out: which number is NOT in the 5 times table? (a) 25 (b) 22 (c) 20 (d) 15
21. 21.1 + 2 + 3 + … + 33 =
22. 22.283 × ? = 2830
23. 23.9 × 6 =
24. 24.Take 270. Reverse its digits and take the smaller number away from the bigger one. What do you get?
25. 25.31 × 1000 =
26. 26.12 × 100 =
27. 27.22 × 4 =
28. 28.Magic square (every row, column and diagonal has the same total): 13 34 19 | 28 22 16 | 25 ? 31. What is the missing number?
29. 29.The 1st of a month is a Wednesday. What day is the 29th of the same month? (a) Wednesday (b) Thursday (c) Tuesday (d) Saturday
30. 30.1 + 2 + 3 + … + 98 =
31. 31.In 3 years a boy will be 11 years old. How old was he 7 years ago?
32. 32.You have 13 coins. Each coin is ₹1 or ₹2, and together they make ₹15. How many ₹2 coins do you have?
33. 33.A piggy bank has 4 coins of ₹5 and 13 coins of ₹2. How many rupees are in it?
34. 34.43 × 4 =
35. 35.12345679 × 36 =
36. 36.Take 30 and take away the sum of its digits. What do you get?
37. 37.26 × 4 =
38. 38.88 × 100 =
39. 39.In 2 years a boy will be 10 years old. How old was he 6 years ago?
40. 40.A piggy bank has 10 coins of ₹5 and 4 coins of ₹2. How many rupees are in it?

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