Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 139 · 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.You buy a pencil box for ₹54 and pay with a ₹100 note. How much change do you get, in rupees?
2. 2.66 laddoos are packed in boxes of 5. How many laddoos are left over?
3. 3.110 children stand in rows of 7. How many full rows can they make?
4. 4.45 + 7 =
5. 5.75 − 43 =
6. 6.65 − 23 =
7. 7.24 + 31 =
8. 8.88 ÷ 8 =
9. 9.21 + 22 =
10. 10.58 + 9 =
11. 11.30 + 27 =
12. 12.18 × 6 =
13. 13.10% of ₹610 =
14. 14.180 ÷ 4 =
15. 15.You buy a water bottle for ₹45 and a pen for ₹26. You pay with a ₹100 note. How much change do you get, in rupees?
16. 16.You buy a box of crayons for ₹24 and a pen for ₹18. You pay with a ₹100 note. How much change do you get, in rupees?
17. 17.25 + 27 =
18. 18.95 − 32 =
19. 19.1013 − 985 =
20. 20.You buy a bag of mangoes for ₹143 and pay with a ₹500 note. How much change do you get, in rupees?
21. 21.A cricket match starts at 1:30 and the first innings ends at 2:30. How many minutes did the innings last?
22. 22.94 × 8 =
23. 23.22 × 4 =
24. 24.19² =
25. 25.36 children stand in rows of 5. How many full rows can they make?
26. 26.8 + ? = 10
27. 27.34 × 4 =
28. 28.98 − 77 =
29. 29.54 − 12 =
30. 30.A train leaves at 8:35 and reaches the next city at 11:20. How many minutes is the journey?
31. 31.97 − 62 =
32. 32.A film starts at 5:15 and ends at 5:40. How many minutes long is the film?
33. 33.93 ÷ 3 =
34. 34.68 children stand in rows of 9. How many full rows can they make?
35. 35.164 ÷ 4 =
36. 36.3 + ? = 10
37. 37.75 + 32 =
38. 38.50% of ₹820 =
39. 39.Best estimate of 633 + 665? (a) 1500 (b) 1100 (c) 1300
40. 40.15² =

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