Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 942 · 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.You buy a notebook for ₹155 and pay with a ₹500 note. How much change do you get, in rupees?
2. 2.What is the remainder when 39 is divided by 5?
3. 3.83 − 72 =
4. 4.25 + 27 =
5. 5.Best estimate of 454 + 278? (a) 1000 (b) 800 (c) 600
6. 6.517 − 479 =
7. 7.47 × 4 =
8. 8.Best estimate of 366 + 549? (a) 700 (b) 900 (c) 1100
9. 9.228 ÷ 3 =
10. 10.112 − 81 =
11. 11.93 − 19 =
12. 12.82 × 4 =
13. 13.13 − 9 =
14. 14.Best estimate of 61 × 46? (a) 300 (b) 30000 (c) 3000
15. 15.50% of ₹430 =
16. 16.You start your homework at 2:25 and finish at 4:55. How many minutes did you work?
17. 17.A cricket match starts at 1:45 and the first innings ends at 2:45. How many minutes did the innings last?
18. 18.64 + 35 =
19. 19.11² =
20. 20.58 × 4 =
21. 21.88 − 67 =
22. 22.10% of ₹430 =
23. 23.A train leaves at 5:50 and reaches the next city at 9:05. How many minutes is the journey?
24. 24.A film starts at 6:40 and ends at 9:05. How many minutes long is the film?
25. 25.Double 21 =
26. 26.17 + 18 =
27. 27.You buy a water bottle for ₹75 and pay with a ₹100 note. How much change do you get, in rupees?
28. 28.432 ÷ 8 =
29. 29.31 + 38 =
30. 30.24 + ? = 100
31. 31.518 − 484 =
32. 32.25 + 9 =
33. 33.18 + 19 =
34. 34.34 + 19 =
35. 35.116 ÷ 4 =
36. 36.You buy a storybook for ₹91 and pay with a ₹100 note. How much change do you get, in rupees?
37. 37.66 + 8 =
38. 38.27² =
39. 39.172 ÷ 4 =
40. 40.84 ÷ 7 =

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