Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 365 · 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. 1.23 + 22 =
2. 2.17 + 16 =
3. 3.63 children stand in rows of 5. How many full rows can they make?
4. 4.1010 − 989 =
5. 5.256 ÷ 8 =
6. 6.74 − 15 =
7. 7.66 ÷ 3 =
8. 8.8 + ? = 10
9. 9.You start your homework at 2:45 and finish at 5:20. How many minutes did you work?
10. 10.You buy a pencil box for ₹13 and a pen for ₹34. You pay with a ₹100 note. How much change do you get, in rupees?
11. 11.53 + ? = 100
12. 12.What is the remainder when 66 is divided by 5?
13. 13.You buy a pencil box for ₹411 and pay with a ₹500 note. How much change do you get, in rupees?
14. 14.6 + ? = 10
15. 15.52 ÷ 4 =
16. 16.19² =
17. 17.You buy a pencil box for ₹48 and pay with a ₹100 note. How much change do you get, in rupees?
18. 18.61 − 12 =
19. 19.26 + 71 =
20. 20.211 − 198 =
21. 21.39 + 61 =
22. 22.44 + 19 =
23. 23.29² =
24. 24.Half of 82 =
25. 25.55 + 55 =
26. 26.176 ÷ 4 =
27. 27.55 + 47 =
28. 28.93 × 6 =
29. 29.5% of ₹510 =
30. 30.12² =
31. 31.16 + 9 =
32. 32.22 + 39 =
33. 33.Best estimate of 56 × 34? (a) 1800 (b) 180 (c) 18000
34. 34.8 + 4 =
35. 35.66 + ? = 100
36. 36.23 + 56 =
37. 37.184 ÷ 8 =
38. 38.13² =
39. 39.50% of ₹870 =
40. 40.26 × 4 =

Free mental maths lessons, practice and worksheets at talentjr.in/mental-maths