Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 212 · 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. 1.77 + ? = 100
2. 2.1012 − 982 =
3. 3.24 + 83 =
4. 4.Double 39 =
5. 5.You buy a bag of mangoes for ₹31 and a pen for ₹11. You pay with a ₹100 note. How much change do you get, in rupees?
6. 6.17 × 4 =
7. 7.61 × 3 =
8. 8.45 + 8 =
9. 9.112 − 76 =
10. 10.21² =
11. 11.67 + 9 =
12. 12.19 + 20 =
13. 13.Best estimate of 695 + 122? (a) 600 (b) 800 (c) 1000
14. 14.79 × 5 =
15. 15.38 × 8 =
16. 16.228 ÷ 4 =
17. 17.25% of ₹860 =
18. 18.184 ÷ 8 =
19. 19.30 × 4 =
20. 20.33 − 29 =
21. 21.455 ÷ 7 =
22. 22.132 ÷ 4 =
23. 23.71 − 42 =
24. 24.112 ÷ 8 =
25. 25.33 + 9 =
26. 26.5% of ₹630 =
27. 27.You buy a water bottle for ₹36 and a pen for ₹31. You pay with a ₹100 note. How much change do you get, in rupees?
28. 28.21 laddoos are packed in boxes of 4. How many laddoos are left over?
29. 29.12 + 13 =
30. 30.28 + 29 =
31. 31.45 + 7 =
32. 32.Double 16 =
33. 33.90 − 29 =
34. 34.13² =
35. 35.You buy a bag of mangoes for ₹368 and pay with a ₹500 note. How much change do you get, in rupees?
36. 36.204 − 181 =
37. 37.Best estimate of 30 × 54? (a) 15000 (b) 150 (c) 1500
38. 38.You buy a bag of mangoes for ₹43 and pay with a ₹100 note. How much change do you get, in rupees?
39. 39.17 + 29 =
40. 40.58 − 16 =

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