Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 510 · 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. 1.87 + 6 =
2. 2.22² =
3. 3.You buy a storybook for ₹31 and a pen for ₹19. You pay with a ₹100 note. How much change do you get, in rupees?
4. 4.27 + 15 =
5. 5.15 × 8 =
6. 6.5% of ₹230 =
7. 7.87 × 6 =
8. 8.83 × 3 =
9. 9.89 × 7 =
10. 10.292 ÷ 4 =
11. 11.Best estimate of 31 × 17? (a) 6000 (b) 60 (c) 600
12. 12.30 + 32 =
13. 13.66 + 48 =
14. 14.26 laddoos are packed in boxes of 5. How many laddoos are left over?
15. 15.You buy a pencil box for ₹198 and pay with a ₹500 note. How much change do you get, in rupees?
16. 16.30 × 4 =
17. 17.24 + 23 =
18. 18.50% of ₹130 =
19. 19.85 ÷ 5 =
20. 20.25 + 8 =
21. 21.74 laddoos are packed in boxes of 9. How many laddoos are left over?
22. 22.You buy a storybook for ₹84 and pay with a ₹100 note. How much change do you get, in rupees?
23. 23.27 + 19 =
24. 24.You buy a kite for ₹45 and a pen for ₹45. You pay with a ₹100 note. How much change do you get, in rupees?
25. 25.60 ÷ 4 =
26. 26.21 × 8 =
27. 27.5 + ? = 10
28. 28.22 + 23 =
29. 29.61 − 37 =
30. 30.16 + 15 =
31. 31.Half of 28 =
32. 32.83 children stand in rows of 7. How many full rows can they make?
33. 33.9 + ? = 10
34. 34.102 ÷ 3 =
35. 35.You buy a notebook for ₹187 and pay with a ₹500 note. How much change do you get, in rupees?
36. 36.1014 − 989 =
37. 37.Best estimate of 30 × 79? (a) 240 (b) 2400 (c) 24000
38. 38.136 ÷ 8 =
39. 39.20 + 19 =
40. 40.558 ÷ 9 =

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