Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 218 · 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. 1.7 + ? = 10
2. 2.69 + 29 =
3. 3.56 + ? = 100
4. 4.19 + 4 =
5. 5.27² =
6. 6.35 + 6 =
7. 7.A train leaves at 8:40 and reaches the next city at 10:05. How many minutes is the journey?
8. 8.80 ÷ 4 =
9. 9.224 ÷ 8 =
10. 10.Best estimate of 278 + 478? (a) 600 (b) 1000 (c) 800
11. 11.You buy a box of crayons for ₹14 and a pen for ₹18. You pay with a ₹100 note. How much change do you get, in rupees?
12. 12.56 × 4 =
13. 13.Best estimate of 71 × 81? (a) 560 (b) 5600 (c) 56000
14. 14.32 × 9 =
15. 15.31 × 6 =
16. 16.8 + ? = 10
17. 17.You buy a cricket ball for ₹485 and pay with a ₹500 note. How much change do you get, in rupees?
18. 18.73 + ? = 100
19. 19.What is the remainder when 35 is divided by 4?
20. 20.6 + ? = 10
21. 21.27 × 4 =
22. 22.A cricket match starts at 6:40 and the first innings ends at 9:35. How many minutes did the innings last?
23. 23.You start your homework at 8:00 and finish at 10:05. How many minutes did you work?
24. 24.16 + 8 =
25. 25.45 children stand in rows of 7. How many full rows can they make?
26. 26.Best estimate of 272 + 767? (a) 1300 (b) 900 (c) 1100
27. 27.236 ÷ 4 =
28. 28.You buy a kite for ₹211 and pay with a ₹500 note. How much change do you get, in rupees?
29. 29.248 ÷ 8 =
30. 30.200 ÷ 4 =
31. 31.214 − 196 =
32. 32.28 children stand in rows of 6. How many full rows can they make?
33. 33.Double 29 =
34. 34.92 − 55 =
35. 35.85 − 58 =
36. 36.You buy a notebook for ₹33 and a pen for ₹35. You pay with a ₹100 note. How much change do you get, in rupees?
37. 37.37 + 8 =
38. 38.86 + 6 =
39. 39.16² =
40. 40.33 × 8 =

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