Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 502 · 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. 1.15 + ? = 100
2. 2.Half of 90 =
3. 3.65 − 37 =
4. 4.59 × 3 =
5. 5.A film starts at 6:40 and ends at 7:50. How many minutes long is the film?
6. 6.6 + 5 =
7. 7.19² =
8. 8.28 + 30 =
9. 9.Half of 80 =
10. 10.47 children stand in rows of 4. How many full rows can they make?
11. 11.2 + ? = 10
12. 12.44 × 4 =
13. 13.17 + 16 =
14. 14.You buy a kite for ₹39 and pay with a ₹100 note. How much change do you get, in rupees?
15. 15.You buy a water bottle for ₹466 and pay with a ₹500 note. How much change do you get, in rupees?
16. 16.39 + 8 =
17. 17.35 × 8 =
18. 18.184 ÷ 8 =
19. 19.19 + 18 =
20. 20.20 + 19 =
21. 21.28 + 29 =
22. 22.14 × 4 =
23. 23.Best estimate of 207 + 260? (a) 500 (b) 700 (c) 300
24. 24.89 − 67 =
25. 25.22² =
26. 26.17² =
27. 27.21 + ? = 100
28. 28.25 + 19 =
29. 29.11 + 10 =
30. 30.57 + 6 =
31. 31.What is the remainder when 47 is divided by 4?
32. 32.You buy a cricket ball for ₹90 and pay with a ₹100 note. How much change do you get, in rupees?
33. 33.1025 − 988 =
34. 34.61 + ? = 100
35. 35.51 − 9 =
36. 36.224 ÷ 4 =
37. 37.69 + 37 =
38. 38.31 × 9 =
39. 39.30 × 8 =
40. 40.A cricket match starts at 4:40 and the first innings ends at 7:05. How many minutes did the innings last?

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