Maths Tricks Practice Worksheet

Maths tricks trick 15: Mixed trick challenge · Set 56 · 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 square (every row, column and diagonal has the same total): 19 ? 31 | 34 22 10 | 13 28 25. What is the missing number?
2. 2.Odd one out: which number is NOT in the 6 times table? (a) 18 (b) 12 (c) 36 (d) 23
3. 3.1111 × 1111 =
4. 4.9 × 6 = 5? — what is the missing digit?
5. 5.If today is Wednesday, what day will it be after 56 days? (a) Saturday (b) Thursday (c) Tuesday (d) Wednesday
6. 6.6 × 4 =
7. 7.Odd one out: which number is NOT in the 9 times table? (a) 63 (b) 36 (c) 45 (d) 49
8. 8.11 × 11 =
9. 9.9 × 8 = ?2 — what is the missing digit?
10. 10.99 × 100 =
11. 11.A piggy bank has 2 coins of ₹5 and 7 coins of ₹2. How many rupees are in it?
12. 12.19 × 4 =
13. 13.628 × ? = 6280
14. 14.3?09 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
15. 15.12345 × 8 + 5 =
16. 16.46 × 4 =
17. 17.9 × 1 =
18. 18.37 × 4 =
19. 19.12345679 × 72 =
20. 20.50 × ? = 50000
21. 21.83 × 100 =
22. 22.9 × 3 = ?7 — what is the missing digit?
23. 23.What comes next? 18, 24, 30, 36, ? (a) 42 (b) 36 (c) 48 (d) 43
24. 24.Do the 1089 trick with 951: reverse and subtract, then reverse that answer and add. What do you get?
25. 25.9 × 3 = 2? — what is the missing digit?
26. 26.10?8 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
27. 27.Magic square (every row, column and diagonal has the same total): ? 10 9 | 12 8 4 | 7 6 11. What is the missing number?
28. 28.Take 963. Reverse its digits and take the smaller number away from the bigger one. What do you get?
29. 29.Magic square (every row, column and diagonal has the same total): 21 11 25 | 23 19 15 | 13 27 ?. What is the missing number?
30. 30.9 × 7 =
31. 31.251? is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
32. 32.Take 13 and take away the sum of its digits. What do you get?
33. 33.111111 × 111111 =
34. 34.Magic square (every row, column and diagonal has the same total): 5 10 9 | 12 8 4 | ? 6 11. What is the missing number?
35. 35.14 × 100 =
36. 36.Take 850. Reverse its digits and take the smaller number away from the bigger one. What do you get?
37. 37.I thought of a number, multiplied it by 2 and added 4. I got 26. What was my number?
38. 38.Odd one out: which number is NOT in the 5 times table? (a) 35 (b) 25 (c) 32 (d) 20
39. 39.1?76 is in the 9 times table. One digit is hidden, and it is not 0. What is the hidden digit?
40. 40.Take 900. Reverse its digits and take the smaller number away from the bigger one. What do you get?

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