Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 219 · 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. 1.18 + 3 =
2. 2.97 − 32 =
3. 3.You buy a notebook for ₹86 and pay with a ₹100 note. How much change do you get, in rupees?
4. 4.Half of 30 =
5. 5.61 − 33 =
6. 6.Double 51 =
7. 7.26 + 27 =
8. 8.What is the remainder when 65 is divided by 6?
9. 9.787 − 99 =
10. 10.15² =
11. 11.5 + ? = 10
12. 12.306 − 283 =
13. 13.1 + ? = 10
14. 14.23 + 22 =
15. 15.29² =
16. 16.You buy a storybook for ₹198 and pay with a ₹500 note. How much change do you get, in rupees?
17. 17.28² =
18. 18.Double 35 =
19. 19.A film starts at 3:35 and ends at 6:25. How many minutes long is the film?
20. 20.13 − 9 =
21. 21.6 + 8 =
22. 22.5 + 7 =
23. 23.216 ÷ 8 =
24. 24.25 − 9 =
25. 25.Best estimate of 316 + 364? (a) 900 (b) 700 (c) 500
26. 26.107 − 29 =
27. 27.You buy a bag of mangoes for ₹190 and pay with a ₹500 note. How much change do you get, in rupees?
28. 28.Half of 106 =
29. 29.24² =
30. 30.216 ÷ 4 =
31. 31.208 ÷ 8 =
32. 32.160 ÷ 4 =
33. 33.83 + 76 =
34. 34.45 + 29 =
35. 35.25 + 8 =
36. 36.You buy a pencil box for ₹51 and pay with a ₹100 note. How much change do you get, in rupees?
37. 37.60 + 65 =
38. 38.Best estimate of 28 × 30? (a) 9000 (b) 90 (c) 900
39. 39.425 ÷ 5 =
40. 40.45 × 4 =

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