Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 657 · 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. 1.52 ÷ 4 =
2. 2.57 + 62 =
3. 3.78 + 3 =
4. 4.180 ÷ 4 =
5. 5.28 children stand in rows of 5. How many full rows can they make?
6. 6.Half of 62 =
7. 7.25% of ₹800 =
8. 8.189 ÷ 9 =
9. 9.Best estimate of 37 × 63? (a) 24000 (b) 240 (c) 2400
10. 10.183 ÷ 3 =
11. 11.132 ÷ 6 =
12. 12.88 + 36 =
13. 13.402 ÷ 6 =
14. 14.612 − 99 =
15. 15.372 ÷ 6 =
16. 16.6 + 7 =
17. 17.33 + 58 =
18. 18.27 + 8 =
19. 19.Best estimate of 423 + 689? (a) 1100 (b) 1300 (c) 900
20. 20.124 ÷ 4 =
21. 21.A cricket match starts at 1:00 and the first innings ends at 1:25. How many minutes did the innings last?
22. 22.25 + 26 =
23. 23.You buy a storybook for ₹16 and pay with a ₹100 note. How much change do you get, in rupees?
24. 24.27 children stand in rows of 5. How many full rows can they make?
25. 25.You start your homework at 2:00 and finish at 2:35. How many minutes did you work?
26. 26.12 + ? = 100
27. 27.You buy a storybook for ₹254 and pay with a ₹500 note. How much change do you get, in rupees?
28. 28.Half of 130 =
29. 29.Half of 82 =
30. 30.38 + ? = 100
31. 31.38 + 51 =
32. 32.13 × 8 =
33. 33.1021 − 994 =
34. 34.26 + 27 =
35. 35.What is the remainder when 97 is divided by 7?
36. 36.14² =
37. 37.25 × 4 =
38. 38.You buy a water bottle for ₹45 and a pen for ₹27. You pay with a ₹100 note. How much change do you get, in rupees?
39. 39.71 − 41 =
40. 40.82 − 51 =

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