Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 446 · 40 questions

How to do it in your head (Look first): A 9, 19 or 99 → round and adjust. Two close numbers → count up (or near doubles when adding). × or ÷ by 4 or 8 → double or halve; other sums → split into tens and ones.

1. 1.What is the remainder when 56 is divided by 9?
2. 2.112 − 83 =
3. 3.58 × 4 =
4. 4.52 + 9 =
5. 5.You start your homework at 2:45 and finish at 5:25. How many minutes did you work?
6. 6.Half of 158 =
7. 7.62 × 4 =
8. 8.112 − 93 =
9. 9.25 + 48 =
10. 10.276 ÷ 4 =
11. 11.15² =
12. 12.89 − 19 =
13. 13.36 + 9 =
14. 14.7 + 9 =
15. 15.15 × 8 =
16. 16.23 × 8 =
17. 17.81 × 9 =
18. 18.16 × 8 =
19. 19.A cricket match starts at 3:10 and the first innings ends at 5:55. How many minutes did the innings last?
20. 20.A film starts at 2:00 and ends at 5:15. How many minutes long is the film?
21. 21.31 × 8 =
22. 22.33 × 4 =
23. 23.36 − 9 =
24. 24.323 − 285 =
25. 25.84 ÷ 4 =
26. 26.Best estimate of 79 × 18? (a) 16000 (b) 1600 (c) 160
27. 27.228 ÷ 4 =
28. 28.67 − 51 =
29. 29.12 × 4 =
30. 30.11 + 13 =
31. 31.8 + 9 =
32. 32.36 + ? = 100
33. 33.376 ÷ 4 =
34. 34.Half of 198 =
35. 35.Best estimate of 44 × 73? (a) 28000 (b) 2800 (c) 280
36. 36.55 − 44 =
37. 37.75 ÷ 3 =
38. 38.66 + 59 =
39. 39.668 + 99 =
40. 40.Best estimate of 76 × 69? (a) 560 (b) 56000 (c) 5600

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