Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 16 · 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. 1.8 + 6 =
2. 2.16 + 5 =
3. 3.28 + 29 =
4. 4.28 + 3 =
5. 5.You buy a box of crayons for ₹19 and pay with a ₹100 note. How much change do you get, in rupees?
6. 6.45 + 33 =
7. 7.You buy a kite for ₹362 and pay with a ₹500 note. How much change do you get, in rupees?
8. 8.41 × 8 =
9. 9.609 + 99 =
10. 10.What is the remainder when 80 is divided by 6?
11. 11.What is the remainder when 25 is divided by 4?
12. 12.192 ÷ 8 =
13. 13.50% of ₹250 =
14. 14.20 + 9 =
15. 15.Best estimate of 600 + 161? (a) 600 (b) 1000 (c) 800
16. 16.196 ÷ 4 =
17. 17.38 × 3 =
18. 18.A train leaves at 3:05 and reaches the next city at 5:00. How many minutes is the journey?
19. 19.41 children stand in rows of 5. How many full rows can they make?
20. 20.238 ÷ 7 =
21. 21.69 + ? = 100
22. 22.A cricket match starts at 1:45 and the first innings ends at 3:10. How many minutes did the innings last?
23. 23.73 + ? = 100
24. 24.You buy a pencil box for ₹346 and pay with a ₹500 note. How much change do you get, in rupees?
25. 25.You buy a water bottle for ₹46 and pay with a ₹100 note. How much change do you get, in rupees?
26. 26.71 + 29 =
27. 27.79 + 64 =
28. 28.34 × 5 =
29. 29.68 + 3 =
30. 30.25% of ₹780 =
31. 31.225 − 177 =
32. 32.30 × 4 =
33. 33.18 + 9 =
34. 34.741 − 99 =
35. 35.49 + 2 =
36. 36.15 + 17 =
37. 37.21² =
38. 38.83 children stand in rows of 6. How many full rows can they make?
39. 39.Half of 34 =
40. 40.37 + ? = 100

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