Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 898 · 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. 1.221 + 99 =
2. 2.80 − 9 =
3. 3.Best estimate of 28 × 40? (a) 12000 (b) 1200 (c) 120
4. 4.51 × 3 =
5. 5.25% of ₹720 =
6. 6.You buy a bag of mangoes for ₹60 and pay with a ₹100 note. How much change do you get, in rupees?
7. 7.276 ÷ 4 =
8. 8.77 + 7 =
9. 9.You buy a storybook for ₹21 and a pen for ₹32. You pay with a ₹100 note. How much change do you get, in rupees?
10. 10.9 + ? = 10
11. 11.18 + 7 =
12. 12.80 ÷ 4 =
13. 13.20 + ? = 100
14. 14.102 − 59 =
15. 15.35 + ? = 100
16. 16.35 + 8 =
17. 17.7 + 4 =
18. 18.You buy a notebook for ₹99 and pay with a ₹100 note. How much change do you get, in rupees?
19. 19.92 − 44 =
20. 20.18 + 20 =
21. 21.25% of ₹450 =
22. 22.54 × 6 =
23. 23.25% of ₹840 =
24. 24.You buy a water bottle for ₹13 and a pen for ₹23. You pay with a ₹100 note. How much change do you get, in rupees?
25. 25.Best estimate of 16 × 58? (a) 120 (b) 1200 (c) 12000
26. 26.87 − 76 =
27. 27.315 − 285 =
28. 28.62 × 9 =
29. 29.Half of 166 =
30. 30.70 × 4 =
31. 31.10% of ₹510 =
32. 32.15 + 16 =
33. 33.57 + 8 =
34. 34.19 + 21 =
35. 35.212 − 182 =
36. 36.59 + 29 =
37. 37.5% of ₹130 =
38. 38.8 + 9 =
39. 39.7 + ? = 10
40. 40.66 × 4 =

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