Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 802 · 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. 1.5 + ? = 10
2. 2.600 ÷ 8 =
3. 3.You buy a notebook for ₹282 and pay with a ₹500 note. How much change do you get, in rupees?
4. 4.Half of 88 =
5. 5.46 × 3 =
6. 6.29 + 28 =
7. 7.29 + 7 =
8. 8.You buy a box of crayons for ₹109 and pay with a ₹500 note. How much change do you get, in rupees?
9. 9.88 + 65 =
10. 10.47 + ? = 100
11. 11.61 × 8 =
12. 12.10% of ₹340 =
13. 13.136 ÷ 8 =
14. 14.75 + 6 =
15. 15.What is the remainder when 32 is divided by 5?
16. 16.511 − 494 =
17. 17.520 − 492 =
18. 18.66 × 3 =
19. 19.33 × 8 =
20. 20.5% of ₹850 =
21. 21.4 + ? = 10
22. 22.188 ÷ 4 =
23. 23.14 × 7 =
24. 24.42 + ? = 100
25. 25.19 + 21 =
26. 26.85 − 56 =
27. 27.Best estimate of 97 × 31? (a) 30000 (b) 300 (c) 3000
28. 28.33 + 9 =
29. 29.518 − 482 =
30. 30.10% of ₹790 =
31. 31.303 − 286 =
32. 32.217 ÷ 7 =
33. 33.10% of ₹220 =
34. 34.You buy a notebook for ₹33 and a pen for ₹36. You pay with a ₹100 note. How much change do you get, in rupees?
35. 35.96 ÷ 4 =
36. 36.Best estimate of 48 × 80? (a) 4000 (b) 40000 (c) 400
37. 37.What is the remainder when 54 is divided by 5?
38. 38.23² =
39. 39.77 + 5 =
40. 40.A train leaves at 3:05 and reaches the next city at 5:25. How many minutes is the journey?

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