Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 819 · 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. 1.524 − 476 =
2. 2.39 + 6 =
3. 3.320 − 287 =
4. 4.Double 42 =
5. 5.31 − 9 =
6. 6.104 − 29 =
7. 7.43 × 3 =
8. 8.A cricket match starts at 1:15 and the first innings ends at 2:50. How many minutes did the innings last?
9. 9.172 ÷ 4 =
10. 10.136 ÷ 4 =
11. 11.44 × 8 =
12. 12.5% of ₹550 =
13. 13.A film starts at 2:50 and ends at 3:45. How many minutes long is the film?
14. 14.57 − 42 =
15. 15.You buy a box of crayons for ₹31 and a pen for ₹22. You pay with a ₹100 note. How much change do you get, in rupees?
16. 16.71 + 69 =
17. 17.Best estimate of 735 + 624? (a) 1500 (b) 1300 (c) 1100
18. 18.54 + 9 =
19. 19.52 + 9 =
20. 20.50% of ₹490 =
21. 21.What is the remainder when 34 is divided by 8?
22. 22.88 − 35 =
23. 23.18 × 8 =
24. 24.28 + 8 =
25. 25.You buy a bag of mangoes for ₹38 and a pen for ₹39. You pay with a ₹100 note. How much change do you get, in rupees?
26. 26.304 − 284 =
27. 27.Best estimate of 183 + 587? (a) 1000 (b) 600 (c) 800
28. 28.79 + ? = 100
29. 29.28² =
30. 30.84 + ? = 100
31. 31.What is the remainder when 74 is divided by 5?
32. 32.507 − 482 =
33. 33.17 × 8 =
34. 34.25% of ₹100 =
35. 35.89 × 4 =
36. 36.25% of ₹570 =
37. 37.17 children stand in rows of 3. How many full rows can they make?
38. 38.32 × 8 =
39. 39.What is the remainder when 55 is divided by 8?
40. 40.15 + 14 =

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