Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 832 · 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. 1.28² =
2. 2.305 − 293 =
3. 3.34 × 4 =
4. 4.Best estimate of 88 × 29? (a) 27000 (b) 270 (c) 2700
5. 5.Best estimate of 13 × 76? (a) 80 (b) 8000 (c) 800
6. 6.69 − 16 =
7. 7.7 + ? = 10
8. 8.You buy a bag of mangoes for ₹43 and a pen for ₹41. You pay with a ₹100 note. How much change do you get, in rupees?
9. 9.19 + 9 =
10. 10.115 ÷ 5 =
11. 11.26 + 27 =
12. 12.10% of ₹750 =
13. 13.43 laddoos are packed in boxes of 7. How many laddoos are left over?
14. 14.34 + 65 =
15. 15.21 + 23 =
16. 16.Double 78 =
17. 17.26² =
18. 18.1 + ? = 10
19. 19.83 − 69 =
20. 20.112 ÷ 8 =
21. 21.54 + 66 =
22. 22.64 − 41 =
23. 23.You buy a notebook for ₹377 and pay with a ₹500 note. How much change do you get, in rupees?
24. 24.91 laddoos are packed in boxes of 9. How many laddoos are left over?
25. 25.223 − 175 =
26. 26.56 + 19 =
27. 27.51 × 4 =
28. 28.You buy a pencil box for ₹22 and a pen for ₹12. You pay with a ₹100 note. How much change do you get, in rupees?
29. 29.50% of ₹830 =
30. 30.86 × 7 =
31. 31.20 + 19 =
32. 32.29 + 2 =
33. 33.39 × 8 =
34. 34.37 × 5 =
35. 35.15² =
36. 36.71 × 3 =
37. 37.17 + ? = 100
38. 38.You buy a bag of mangoes for ₹277 and pay with a ₹500 note. How much change do you get, in rupees?
39. 39.Best estimate of 424 + 392? (a) 600 (b) 1000 (c) 800
40. 40.A cricket match starts at 4:05 and the first innings ends at 7:05. How many minutes did the innings last?

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