Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 972 · 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.Best estimate of 40 × 73? (a) 2800 (b) 280 (c) 28000
2. 2.Half of 116 =
3. 3.What is the remainder when 57 is divided by 4?
4. 4.446 + 99 =
5. 5.Best estimate of 12 × 12? (a) 100 (b) 10 (c) 1000
6. 6.50 + ? = 100
7. 7.You start your homework at 3:05 and finish at 4:45. How many minutes did you work?
8. 8.28 + 30 =
9. 9.46 × 9 =
10. 10.27 + 28 =
11. 11.196 ÷ 4 =
12. 12.41 × 3 =
13. 13.Best estimate of 36 × 30? (a) 1200 (b) 120 (c) 12000
14. 14.7 + 9 =
15. 15.Best estimate of 400 + 169? (a) 800 (b) 400 (c) 600
16. 16.57 + 6 =
17. 17.25² =
18. 18.A film starts at 5:25 and ends at 6:20. How many minutes long is the film?
19. 19.17 + 7 =
20. 20.Best estimate of 77 × 16? (a) 16000 (b) 1600 (c) 160
21. 21.57 × 6 =
22. 22.24 + 25 =
23. 23.37 + 7 =
24. 24.9 + 10 =
25. 25.3 + ? = 10
26. 26.What is the remainder when 61 is divided by 4?
27. 27.8 + ? = 10
28. 28.17 children stand in rows of 3. How many full rows can they make?
29. 29.176 ÷ 8 =
30. 30.422 + 99 =
31. 31.A film starts at 6:15 and ends at 7:40. How many minutes long is the film?
32. 32.25% of ₹340 =
33. 33.5 + ? = 10
34. 34.5% of ₹470 =
35. 35.10% of ₹700 =
36. 36.280 ÷ 8 =
37. 37.21 + 22 =
38. 38.A film starts at 7:45 and ends at 8:40. How many minutes long is the film?
39. 39.27 − 19 =
40. 40.35 + 8 =

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