Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 121 · 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% of ₹290 =
2. 2.You buy a bag of mangoes for ₹57 and pay with a ₹100 note. How much change do you get, in rupees?
3. 3.You buy a notebook for ₹392 and pay with a ₹500 note. How much change do you get, in rupees?
4. 4.Double 84 =
5. 5.17² =
6. 6.14 + 13 =
7. 7.75 ÷ 5 =
8. 8.28 × 8 =
9. 9.6 + 5 =
10. 10.320 ÷ 8 =
11. 11.9 + ? = 10
12. 12.30 + ? = 100
13. 13.Best estimate of 49 × 67? (a) 350 (b) 35000 (c) 3500
14. 14.Best estimate of 66 × 36? (a) 280 (b) 28000 (c) 2800
15. 15.86 − 9 =
16. 16.68 + ? = 100
17. 17.144 ÷ 4 =
18. 18.Best estimate of 323 + 122? (a) 600 (b) 400 (c) 200
19. 19.28 + 3 =
20. 20.71 − 29 =
21. 21.29 + 31 =
22. 22.44 + ? = 100
23. 23.86 × 6 =
24. 24.A cricket match starts at 8:15 and the first innings ends at 11:00. How many minutes did the innings last?
25. 25.14 × 4 =
26. 26.74 children stand in rows of 9. How many full rows can they make?
27. 27.11² =
28. 28.50% of ₹330 =
29. 29.46 − 29 =
30. 30.312 ÷ 4 =
31. 31.You buy a water bottle for ₹40 and a pen for ₹31. You pay with a ₹100 note. How much change do you get, in rupees?
32. 32.10% of ₹320 =
33. 33.109 children stand in rows of 8. How many full rows can they make?
34. 34.6 + ? = 10
35. 35.29² =
36. 36.A train leaves at 6:40 and reaches the next city at 9:50. How many minutes is the journey?
37. 37.25% of ₹870 =
38. 38.6 + 7 =
39. 39.99 × 5 =
40. 40.69 children stand in rows of 6. How many full rows can they make?

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