Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 513 · 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. 1.78 + 6 =
2. 2.136 ÷ 4 =
3. 3.4 + ? = 10
4. 4.291 ÷ 3 =
5. 5.320 ÷ 8 =
6. 6.You buy a bag of mangoes for ₹120 and pay with a ₹500 note. How much change do you get, in rupees?
7. 7.What is the remainder when 86 is divided by 8?
8. 8.50% of ₹540 =
9. 9.23 + ? = 100
10. 10.57 + 8 =
11. 11.36 + ? = 100
12. 12.90 − 43 =
13. 13.50% of ₹740 =
14. 14.What is the remainder when 96 is divided by 9?
15. 15.19² =
16. 16.23 + 29 =
17. 17.58 − 19 =
18. 18.55 + 9 =
19. 19.46 × 8 =
20. 20.112 ÷ 4 =
21. 21.56 − 42 =
22. 22.Best estimate of 666 + 147? (a) 600 (b) 800 (c) 1000
23. 23.You buy a water bottle for ₹32 and pay with a ₹100 note. How much change do you get, in rupees?
24. 24.22 × 6 =
25. 25.A cricket match starts at 7:05 and the first innings ends at 9:30. How many minutes did the innings last?
26. 26.54 − 19 =
27. 27.92 laddoos are packed in boxes of 6. How many laddoos are left over?
28. 28.522 − 480 =
29. 29.101 − 29 =
30. 30.76 + 9 =
31. 31.228 ÷ 6 =
32. 32.Best estimate of 522 + 598? (a) 900 (b) 1300 (c) 1100
33. 33.Best estimate of 853 + 626? (a) 1500 (b) 1700 (c) 1300
34. 34.29² =
35. 35.396 ÷ 9 =
36. 36.279 ÷ 9 =
37. 37.25² =
38. 38.682 + 99 =
39. 39.42 + 52 =
40. 40.34 + ? = 100

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