Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 712 · 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. 1.160 ÷ 8 =
2. 2.51 + 9 =
3. 3.51 + 73 =
4. 4.460 ÷ 5 =
5. 5.You start your homework at 3:05 and finish at 4:20. How many minutes did you work?
6. 6.17 + 29 =
7. 7.38 × 4 =
8. 8.14 + 13 =
9. 9.16² =
10. 10.11² =
11. 11.You buy a box of crayons for ₹344 and pay with a ₹500 note. How much change do you get, in rupees?
12. 12.49 + 9 =
13. 13.26 + 27 =
14. 14.78 × 3 =
15. 15.57 + 19 =
16. 16.5% of ₹170 =
17. 17.25% of ₹640 =
18. 18.24 × 8 =
19. 19.55 − 28 =
20. 20.62 − 34 =
21. 21.10% of ₹530 =
22. 22.Double 68 =
23. 23.Half of 26 =
24. 24.A film starts at 7:45 and ends at 10:40. How many minutes long is the film?
25. 25.20 + 19 =
26. 26.Best estimate of 432 + 138? (a) 500 (b) 300 (c) 700
27. 27.29 + 30 =
28. 28.108 children stand in rows of 8. How many full rows can they make?
29. 29.You buy a water bottle for ₹44 and a pen for ₹22. You pay with a ₹100 note. How much change do you get, in rupees?
30. 30.What is the remainder when 51 is divided by 4?
31. 31.73 × 3 =
32. 32.42 × 3 =
33. 33.76 ÷ 4 =
34. 34.22² =
35. 35.66 + 8 =
36. 36.Best estimate of 69 × 16? (a) 140 (b) 1400 (c) 14000
37. 37.35 + 8 =
38. 38.98 − 57 =
39. 39.31 × 5 =
40. 40.A film starts at 5:25 and ends at 8:15. How many minutes long is the film?

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