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\ 07-Nov-2024 Bharat Arora Proof-8 Reader’s Sign _______________________ Date __________

Chapter Assessment Practice Time 4A
A. 1. (b) 2. (d) 3. (a) 4. (d) 5. (a) 1. (a) Ice cream flavours Tally marks Number of children
6. (c)
B. 1. 5 digit or 6 digit 2. 25452 (Answer may vary) 3. 600 Vanilla 6
4. 900 5. 6 Chocolate 9
C. 1. (d) 2. (a) 3. (e) 4. (b) 5. (c)
D. 1. 2340 3421 7344 6174 Strawberry 4
4981 3115 9124 9876 Mango 6
2465 1944 5000 6027
(b) Chocolate
3165 4777 6413 8888 2. Observations Tally marks Frequency
2465, 3115, 3165, 3421, 4777, 5000, 6027, 6413, 7344, 9124 (Shoe size) (Number of children)
2. (a) 77 (b) 121 (c) 4884 (d) 484 (e) 8813200023188 4 7
3. 4884; Yes
4. No; 12 × 12 = 144 21 × 21 = 441 5 8
112 × 112 = 12544 211 × 211 = 44521 6 4
1112 × 1112 = 1236544 2111 × 2111 = 4456321
No, we cannot find a series of squares as the pattern discontinue after 7 7
some steps.
5. 1001 + 5665 + 4774 = 3443 + 2002 + 5995 8 4
6. Yes.
No, since all the digits of a number are same. (Next line) Thus, the shoe size 5 is the most frequent.
Maths Fun 3. Family size Tally marks Frequency
1. 2. 3. 4. 5. (Number of families)
4 4 4 1 1 8 1 1 6
6.
7 6 0 0 9 1 2 9
7. 8. 9. 3 5
1 2 5 0 6 5 6
10. 11. 4 3
4 7 5 1
12. 13. 14. 6 2
3 7 5 0 1 2 5 6 (a) 1 (b) 6 families (c) 2
15. 16.
8 8 2 7 4. Marks Tally marks Frequency
17. 18. 19. 20. 60 5
1 3 2 0 1 2 5 65 3
21.
1 5 2 7 0 1 70 6
22. 23.
1 5 0 0 8 9 9 80 5
Mental Maths 85 2
1. Smallest 3-digit number for digit sum 14 = 149 90 3
Greatest 3-digit number for digit sum 14 = 950
100 1
2. 3333 2222 4445 4500
Second smallest number (a) 100 (b) 14 students (c) 11 students (d) 25 students
(a supercell). Practice Time 4B
3. 9 numbers 4. Yes; 4005 – 3950 = 55 1. (a) 100 stamps (b) Jaya (c) 640 stamps
5. Yes, 30000 + 30000 + 3000 + 3000 + 3000 + 3000 + 3000 + 3000 + 3000 2. (a) 2021, 10000 cars (b) 2023
+ 3000 + 300 + 300 + 300 + 300 + 300 + 300 + 300 + 300
or 30,000 × 2 + 3,000 × 8 + 300 × 8 (c) 24000 cars (d) 92000 cars
Brain Sizzlers 3. (a) Joseph (b) 450 fruit baskets
1. The numbers written in the diagram are Collatz sequence. (c) Ranjit, Joseph and Rahim
2. 7 steps 3. 20 steps 4. Activity Number of students
4. If Sunita starts from 13 and Lalita starts from 21, then Lalita will reach to Playing
1 in less number of steps. [Answer may vary]

Chapter 4: Data Handling and Presentation Reading storybooks
Let’s Recall
Watching TV
Blood Group O + O – A + A – B + B – AB + AB –

Number of Students 11 8 10 10 7 8 1 5 Listening music
+
1. O 2. AB + 3. 8 students
Maths Connect Painting
USA: Bronze – 42 People’s Republic of China: Silver – 27
Japan: Total – 45 Australia: Gold – 18 France: Silver – 26 Key: 1 = 10 students, 1 = 5 students
1. Japan, Australia 2. Japan 3. France 4. 100

313 Answers