Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 771 · 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.Half of 138 =
2. 2.1012 − 978 =
3. 3.104 ÷ 8 =
4. 4.50% of ₹620 =
5. 5.10% of ₹260 =
6. 6.202 − 190 =
7. 7.What is the remainder when 25 is divided by 3?
8. 8.70 + 29 =
9. 9.37 × 8 =
10. 10.28² =
11. 11.60 + 39 =
12. 12.504 ÷ 6 =
13. 13.14 + ? = 100
14. 14.29 + 30 =
15. 15.You buy a kite for ₹17 and pay with a ₹100 note. How much change do you get, in rupees?
16. 16.27 + 5 =
17. 17.88 ÷ 8 =
18. 18.31 + 34 =
19. 19.A train leaves at 5:20 and reaches the next city at 7:15. How many minutes is the journey?
20. 20.81 × 3 =
21. 21.Best estimate of 607 + 667? (a) 1500 (b) 1300 (c) 1100
22. 22.51 + 9 =
23. 23.What is the remainder when 75 is divided by 8?
24. 24.58 × 4 =
25. 25.A film starts at 3:40 and ends at 6:45. How many minutes long is the film?
26. 26.You buy a bag of mangoes for ₹76 and pay with a ₹100 note. How much change do you get, in rupees?
27. 27.Best estimate of 514 + 453? (a) 800 (b) 1200 (c) 1000
28. 28.14 + 16 =
29. 29.34 + 29 =
30. 30.32 − 19 =
31. 31.22 + 21 =
32. 32.152 ÷ 8 =
33. 33.63 − 52 =
34. 34.78 + 4 =
35. 35.144 ÷ 4 =
36. 36.What is the remainder when 19 is divided by 3?
37. 37.518 − 481 =
38. 38.28 − 9 =
39. 39.Best estimate of 66 × 91? (a) 6300 (b) 630 (c) 63000
40. 40.17 + 18 =

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