Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 612 · 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. 1.50 + 24 =
2. 2.19² =
3. 3.70 + 42 =
4. 4.30 + ? = 100
5. 5.59 − 31 =
6. 6.85 + 29 =
7. 7.10% of ₹290 =
8. 8.60 × 4 =
9. 9.You buy a box of crayons for ₹42 and a pen for ₹12. You pay with a ₹100 note. How much change do you get, in rupees?
10. 10.25% of ₹680 =
11. 11.59 + 4 =
12. 12.45 + 9 =
13. 13.136 + 99 =
14. 14.55 − 38 =
15. 15.88 − 46 =
16. 16.17 + 16 =
17. 17.15 + 16 =
18. 18.68 + ? = 100
19. 19.You buy a pencil box for ₹253 and pay with a ₹500 note. How much change do you get, in rupees?
20. 20.56 + ? = 100
21. 21.225 ÷ 9 =
22. 22.91 − 49 =
23. 23.Double 93 =
24. 24.Double 19 =
25. 25.60 ÷ 4 =
26. 26.771 − 99 =
27. 27.Half of 40 =
28. 28.52 ÷ 4 =
29. 29.1009 − 995 =
30. 30.11 + 13 =
31. 31.You buy a notebook for ₹470 and pay with a ₹500 note. How much change do you get, in rupees?
32. 32.52 − 18 =
33. 33.You buy a kite for ₹334 and pay with a ₹500 note. How much change do you get, in rupees?
34. 34.Double 49 =
35. 35.You start your homework at 6:00 and finish at 8:00. How many minutes did you work?
36. 36.72 − 42 =
37. 37.80 + ? = 100
38. 38.93 − 29 =
39. 39.You buy a bag of mangoes for ₹149 and pay with a ₹500 note. How much change do you get, in rupees?
40. 40.57 − 29 =

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