Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 82 · 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.Best estimate of 730 + 851? (a) 1800 (b) 1600 (c) 1400
2. 2.27 + 28 =
3. 3.34 × 4 =
4. 4.Half of 92 =
5. 5.47 × 9 =
6. 6.Best estimate of 79 × 36? (a) 3200 (b) 320 (c) 32000
7. 7.76 − 48 =
8. 8.A cricket match starts at 4:05 and the first innings ends at 6:00. How many minutes did the innings last?
9. 9.405 ÷ 5 =
10. 10.What is the remainder when 31 is divided by 4?
11. 11.Best estimate of 44 × 36? (a) 16000 (b) 160 (c) 1600
12. 12.65 children stand in rows of 7. How many full rows can they make?
13. 13.What is the remainder when 25 is divided by 3?
14. 14.10% of ₹730 =
15. 15.50% of ₹420 =
16. 16.17² =
17. 17.Best estimate of 388 + 320? (a) 900 (b) 500 (c) 700
18. 18.364 ÷ 4 =
19. 19.What is the remainder when 38 is divided by 3?
20. 20.18 × 4 =
21. 21.16 + 17 =
22. 22.56 + ? = 100
23. 23.69 − 33 =
24. 24.73 × 4 =
25. 25.196 ÷ 4 =
26. 26.35 + ? = 100
27. 27.66 + 8 =
28. 28.A train leaves at 5:35 and reaches the next city at 8:05. How many minutes is the journey?
29. 29.66 × 8 =
30. 30.63 − 19 =
31. 31.You start your homework at 1:00 and finish at 1:40. How many minutes did you work?
32. 32.91 × 4 =
33. 33.109 − 29 =
34. 34.50% of ₹600 =
35. 35.Best estimate of 17 × 22? (a) 40 (b) 4000 (c) 400
36. 36.43 × 3 =
37. 37.26 × 8 =
38. 38.148 ÷ 4 =
39. 39.7 + 9 =
40. 40.61 − 45 =

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