Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 596 · 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. 1.51 × 6 =
2. 2.Best estimate of 78 × 48? (a) 4000 (b) 40000 (c) 400
3. 3.Best estimate of 860 + 259? (a) 1400 (b) 1000 (c) 1200
4. 4.224 ÷ 4 =
5. 5.Best estimate of 40 × 17? (a) 8000 (b) 80 (c) 800
6. 6.You buy a pencil box for ₹39 and a pen for ₹32. You pay with a ₹100 note. How much change do you get, in rupees?
7. 7.279 ÷ 3 =
8. 8.108 ÷ 4 =
9. 9.52 + ? = 100
10. 10.75 + 9 =
11. 11.19 + 3 =
12. 12.A film starts at 6:10 and ends at 7:15. How many minutes long is the film?
13. 13.50% of ₹260 =
14. 14.56 − 41 =
15. 15.297 ÷ 9 =
16. 16.160 ÷ 8 =
17. 17.83 − 32 =
18. 18.76 − 66 =
19. 19.46 children stand in rows of 3. How many full rows can they make?
20. 20.224 ÷ 8 =
21. 21.What is the remainder when 21 is divided by 4?
22. 22.49 + 29 =
23. 23.89 − 68 =
24. 24.96 ÷ 6 =
25. 25.29 + 30 =
26. 26.61 laddoos are packed in boxes of 4. How many laddoos are left over?
27. 27.40 + 19 =
28. 28.29 − 9 =
29. 29.96 ÷ 4 =
30. 30.78 + 9 =
31. 31.62 + ? = 100
32. 32.Double 39 =
33. 33.22 + ? = 100
34. 34.88 − 23 =
35. 35.32 + 36 =
36. 36.56 children stand in rows of 6. How many full rows can they make?
37. 37.523 − 495 =
38. 38.23 + 22 =
39. 39.67 × 4 =
40. 40.27² =

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