Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 77 · 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.A train leaves at 2:15 and reaches the next city at 5:05. How many minutes is the journey?
2. 2.58 × 4 =
3. 3.102 − 60 =
4. 4.26 × 3 =
5. 5.Best estimate of 293 + 186? (a) 300 (b) 500 (c) 700
6. 6.26 + 81 =
7. 7.24 + 25 =
8. 8.52 × 4 =
9. 9.12 + 13 =
10. 10.24 + 9 =
11. 11.524 − 497 =
12. 12.28² =
13. 13.13² =
14. 14.You buy a pencil box for ₹35 and pay with a ₹100 note. How much change do you get, in rupees?
15. 15.18² =
16. 16.Half of 38 =
17. 17.25 + 24 =
18. 18.80 − 9 =
19. 19.39 − 9 =
20. 20.514 − 495 =
21. 21.You buy a water bottle for ₹35 and a pen for ₹32. You pay with a ₹100 note. How much change do you get, in rupees?
22. 22.37 children stand in rows of 3. How many full rows can they make?
23. 23.Double 71 =
24. 24.You buy a water bottle for ₹209 and pay with a ₹500 note. How much change do you get, in rupees?
25. 25.47 + 43 =
26. 26.37 + ? = 100
27. 27.70 + 28 =
28. 28.A film starts at 5:40 and ends at 6:40. How many minutes long is the film?
29. 29.111 − 75 =
30. 30.Best estimate of 733 + 124? (a) 800 (b) 600 (c) 1000
31. 31.19 + ? = 100
32. 32.288 ÷ 8 =
33. 33.Double 42 =
34. 34.What is the remainder when 33 is divided by 7?
35. 35.125 − 97 =
36. 36.100 ÷ 4 =
37. 37.15 + 17 =
38. 38.71 + 19 =
39. 39.124 ÷ 4 =
40. 40.25% of ₹510 =

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