Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 549 · 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. 1.46 + 8 =
2. 2.You buy a box of crayons for ₹39 and a pen for ₹36. You pay with a ₹100 note. How much change do you get, in rupees?
3. 3.You start your homework at 1:50 and finish at 4:10. How many minutes did you work?
4. 4.5% of ₹630 =
5. 5.61 × 8 =
6. 6.455 ÷ 5 =
7. 7.60 ÷ 4 =
8. 8.5 + ? = 10
9. 9.21² =
10. 10.You start your homework at 4:20 and finish at 5:50. How many minutes did you work?
11. 11.420 + 99 =
12. 12.4 + ? = 10
13. 13.36 + 42 =
14. 14.49 × 6 =
15. 15.10% of ₹890 =
16. 16.26 + ? = 100
17. 17.110 children stand in rows of 7. How many full rows can they make?
18. 18.516 − 483 =
19. 19.79 × 7 =
20. 20.21 + ? = 100
21. 21.Half of 164 =
22. 22.25² =
23. 23.Best estimate of 97 × 97? (a) 100000 (b) 10000 (c) 1000
24. 24.15 × 8 =
25. 25.58 − 44 =
26. 26.26 laddoos are packed in boxes of 3. How many laddoos are left over?
27. 27.7 + 6 =
28. 28.15 + 14 =
29. 29.10 + 11 =
30. 30.67 + 4 =
31. 31.You buy a cricket ball for ₹33 and pay with a ₹100 note. How much change do you get, in rupees?
32. 32.14 × 4 =
33. 33.84 ÷ 4 =
34. 34.83 + 26 =
35. 35.10 + 12 =
36. 36.28 + 29 =
37. 37.55 + 6 =
38. 38.68 × 9 =
39. 39.Half of 54 =
40. 40.66 + 5 =

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