Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 623 · 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. 1.30 + 64 =
2. 2.19² =
3. 3.You buy a pencil box for ₹199 and pay with a ₹500 note. How much change do you get, in rupees?
4. 4.You buy a cricket ball for ₹13 and a pen for ₹18. You pay with a ₹100 note. How much change do you get, in rupees?
5. 5.Double 59 =
6. 6.74 × 6 =
7. 7.15 × 9 =
8. 8.88 ÷ 4 =
9. 9.63 ÷ 3 =
10. 10.92 ÷ 4 =
11. 11.Best estimate of 723 + 757? (a) 1500 (b) 1700 (c) 1300
12. 12.86 + ? = 100
13. 13.168 ÷ 6 =
14. 14.13 × 8 =
15. 15.25² =
16. 16.19 + 9 =
17. 17.1003 − 988 =
18. 18.67 − 52 =
19. 19.68 children stand in rows of 5. How many full rows can they make?
20. 20.You buy a water bottle for ₹22 and a pen for ₹23. You pay with a ₹100 note. How much change do you get, in rupees?
21. 21.25% of ₹300 =
22. 22.25% of ₹170 =
23. 23.104 ÷ 8 =
24. 24.44 + 44 =
25. 25.94 × 7 =
26. 26.517 − 487 =
27. 27.288 ÷ 8 =
28. 28.A cricket match starts at 2:45 and the first innings ends at 4:40. How many minutes did the innings last?
29. 29.46 + 5 =
30. 30.9 + 8 =
31. 31.You buy a notebook for ₹343 and pay with a ₹500 note. How much change do you get, in rupees?
32. 32.48 + 3 =
33. 33.109 − 91 =
34. 34.What is the remainder when 106 is divided by 8?
35. 35.29 + ? = 100
36. 36.55 + 8 =
37. 37.Double 42 =
38. 38.10% of ₹330 =
39. 39.Half of 60 =
40. 40.44 children stand in rows of 3. How many full rows can they make?

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