Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 573 · 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. 1.65 × 4 =
2. 2.153 ÷ 3 =
3. 3.You buy a storybook for ₹415 and pay with a ₹500 note. How much change do you get, in rupees?
4. 4.20 + 19 =
5. 5.A film starts at 7:10 and ends at 9:40. How many minutes long is the film?
6. 6.89 + ? = 100
7. 7.55 − 25 =
8. 8.11² =
9. 9.A cricket match starts at 7:30 and the first innings ends at 9:35. How many minutes did the innings last?
10. 10.You buy a notebook for ₹18 and pay with a ₹100 note. How much change do you get, in rupees?
11. 11.87 − 55 =
12. 12.Double 69 =
13. 13.10 + 11 =
14. 14.You buy a box of crayons for ₹14 and a pen for ₹18. You pay with a ₹100 note. How much change do you get, in rupees?
15. 15.65 − 41 =
16. 16.A train leaves at 2:45 and reaches the next city at 5:30. How many minutes is the journey?
17. 17.A train leaves at 7:55 and reaches the next city at 10:40. How many minutes is the journey?
18. 18.Best estimate of 54 × 81? (a) 40000 (b) 400 (c) 4000
19. 19.14 + 16 =
20. 20.543 + 99 =
21. 21.78 + ? = 100
22. 22.60 − 29 =
23. 23.25 × 5 =
24. 24.5% of ₹540 =
25. 25.18² =
26. 26.280 ÷ 8 =
27. 27.195 ÷ 3 =
28. 28.58 + 4 =
29. 29.61 + 9 =
30. 30.40 + ? = 100
31. 31.109 − 55 =
32. 32.33 × 4 =
33. 33.You buy a bag of mangoes for ₹13 and a pen for ₹31. You pay with a ₹100 note. How much change do you get, in rupees?
34. 34.97 − 19 =
35. 35.75 × 9 =
36. 36.A train leaves at 3:55 and reaches the next city at 4:35. How many minutes is the journey?
37. 37.50% of ₹880 =
38. 38.28 + 29 =
39. 39.29 + 4 =
40. 40.31 + ? = 100

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