Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 894 · 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.You buy a box of crayons for ₹209 and pay with a ₹500 note. How much change do you get, in rupees?
2. 2.384 ÷ 8 =
3. 3.755 − 99 =
4. 4.18 + 6 =
5. 5.95 − 14 =
6. 6.213 ÷ 3 =
7. 7.56 + 51 =
8. 8.34 + 51 =
9. 9.28 × 4 =
10. 10.63 + 29 =
11. 11.Half of 140 =
12. 12.70 children stand in rows of 9. How many full rows can they make?
13. 13.27² =
14. 14.Half of 50 =
15. 15.39 + ? = 100
16. 16.17 + 9 =
17. 17.73 × 4 =
18. 18.24 + 25 =
19. 19.47 × 4 =
20. 20.What is the remainder when 41 is divided by 3?
21. 21.150 ÷ 6 =
22. 22.12² =
23. 23.78 + ? = 100
24. 24.51 − 28 =
25. 25.83 − 71 =
26. 26.Best estimate of 53 × 30? (a) 15000 (b) 150 (c) 1500
27. 27.25 + 6 =
28. 28.55 − 45 =
29. 29.89 + 3 =
30. 30.96 ÷ 8 =
31. 31.Best estimate of 365 + 127? (a) 500 (b) 300 (c) 700
32. 32.81 children stand in rows of 7. How many full rows can they make?
33. 33.85 + 81 =
34. 34.You buy a storybook for ₹31 and a pen for ₹44. You pay with a ₹100 note. How much change do you get, in rupees?
35. 35.38 laddoos are packed in boxes of 4. How many laddoos are left over?
36. 36.You buy a bag of mangoes for ₹14 and pay with a ₹100 note. How much change do you get, in rupees?
37. 37.89 − 12 =
38. 38.Half of 96 =
39. 39.What is the remainder when 23 is divided by 3?
40. 40.16 + 17 =

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