Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 259 · 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 28 =
2. 2.Half of 198 =
3. 3.85 + 7 =
4. 4.You buy a notebook for ₹35 and a pen for ₹21. You pay with a ₹100 note. How much change do you get, in rupees?
5. 5.60 − 29 =
6. 6.79 + 7 =
7. 7.45 + 6 =
8. 8.280 ÷ 8 =
9. 9.97 × 4 =
10. 10.10% of ₹560 =
11. 11.86 + 56 =
12. 12.62 − 48 =
13. 13.50 × 4 =
14. 14.91 − 29 =
15. 15.Half of 26 =
16. 16.7 + 4 =
17. 17.76 + 7 =
18. 18.75 + 9 =
19. 19.48 + ? = 100
20. 20.59 − 45 =
21. 21.You buy a pencil box for ₹17 and a pen for ₹11. You pay with a ₹100 note. How much change do you get, in rupees?
22. 22.A film starts at 2:35 and ends at 4:45. How many minutes long is the film?
23. 23.23 + 25 =
24. 24.A train leaves at 7:35 and reaches the next city at 9:10. How many minutes is the journey?
25. 25.46 children stand in rows of 4. How many full rows can they make?
26. 26.234 ÷ 9 =
27. 27.60 − 37 =
28. 28.Best estimate of 36 × 19? (a) 80 (b) 8000 (c) 800
29. 29.55 + 8 =
30. 30.58 − 36 =
31. 31.25 + 8 =
32. 32.21² =
33. 33.20 children stand in rows of 3. How many full rows can they make?
34. 34.65 + 76 =
35. 35.57 + ? = 100
36. 36.Best estimate of 76 × 28? (a) 2400 (b) 24000 (c) 240
37. 37.22 children stand in rows of 5. How many full rows can they make?
38. 38.25% of ₹550 =
39. 39.544 ÷ 8 =
40. 40.25² =

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