Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 620 · 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.What is the remainder when 65 is divided by 9?
2. 2.456 ÷ 8 =
3. 3.You buy a box of crayons for ₹127 and pay with a ₹500 note. How much change do you get, in rupees?
4. 4.6 + 6 =
5. 5.64 × 4 =
6. 6.85 laddoos are packed in boxes of 8. How many laddoos are left over?
7. 7.A train leaves at 8:00 and reaches the next city at 10:30. How many minutes is the journey?
8. 8.37 laddoos are packed in boxes of 8. How many laddoos are left over?
9. 9.324 − 294 =
10. 10.27² =
11. 11.102 ÷ 6 =
12. 12.19 + 20 =
13. 13.28 + 27 =
14. 14.77 × 4 =
15. 15.67 + 45 =
16. 16.74 × 4 =
17. 17.A cricket match starts at 2:20 and the first innings ends at 4:50. How many minutes did the innings last?
18. 18.65 + 7 =
19. 19.98 × 3 =
20. 20.48 × 4 =
21. 21.16 + 18 =
22. 22.10 + 11 =
23. 23.A train leaves at 7:30 and reaches the next city at 8:50. How many minutes is the journey?
24. 24.512 − 488 =
25. 25.81 × 4 =
26. 26.Best estimate of 64 × 14? (a) 600 (b) 6000 (c) 60
27. 27.15² =
28. 28.28 + ? = 100
29. 29.35 − 9 =
30. 30.58 + 16 =
31. 31.69 + 9 =
32. 32.312 − 295 =
33. 33.10% of ₹120 =
34. 34.You buy a bag of mangoes for ₹85 and pay with a ₹100 note. How much change do you get, in rupees?
35. 35.Half of 80 =
36. 36.212 ÷ 4 =
37. 37.313 − 284 =
38. 38.5% of ₹70 =
39. 39.10% of ₹110 =
40. 40.Best estimate of 37 × 66? (a) 28000 (b) 280 (c) 2800

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