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\ 06-Jan-2025 Bharat Arora Proof-3 Reader’s Sign _______________________ Date __________

Maths Connect Chapter Assessment
4778.25 km A. 1. (b) 2. (c) 3. (d) 4. (c)
Life Skills 5. (c) 6. (b) 7. (a) 8. (a)
Length of the base of the dome (b) = 49.45 feet. B. 1. (d) 2. (b) 3. (d) 4. (d)
Mental Maths C. 1. a = 5 2 2. a = 9 3. 10 4. x = 2 5. x = –2
1. 2 2. –1 3. 6 4. 13 D. 1. F 2. F 3. F 4. T 5. F
5 9 18 13
E. 1. (a) n = 66 (b) m = –30 (c) x = 4 (d) t =
Chapter 2: Linear Equations in One Variable 29 35
(e) x = 1 (f) y = −
Let’s Recall 19
x 2. Yanshu’s age: 6 years, Mother’s age: 18 years
1. + 3 = 30 3. Arvind’s age: 30 years 4. Larger number: 20
3
2. When 2 is subtracted from four times y, the result is 18. 5. Number added: 1 6. Length: 74 m, Breadth: 36 m
3. No 4. 30000 7. Length of equal sides: 37 cm
Quick Check 30
2. 5x – 6 = 9 4. 7z = 14 8. Sam: 15 years, Father: 35 years, Grandfather: 55 years
1-rupee coins: 80; 2-rupee coins: 60; 5-rupee coins: 20
9.
Think and Answer 10. 20 11. Numbers: 1411 and 1079
22
Correct the step 3 by writing x = instead of 11x = 2, so the correct 12. Fahrenheit temperature: −14.8°F
result in step 4 is x = 2. 11 13. (a) 22 km/h (b) 20 km/h (c) 4 hours
Practice Time 2A Maths Fun
1. (a) and (d) Across:
2. (a) x = 4 (b) x = 6 (c) y = 6 (d) x = –6 2. One 4. Equation 5. Variable 8. Brackets
3 Down:
(e) x = 3 (f) x = − (g) x = 12 (h) x = 15 1. Transposition 3. Power 6. Value 7. Solution
4
16 Chapter 3: Quadrilaterals
(i) x = 2 (j) x = –1 (k) x = (l) x = 8
5 Let’s Recall
5 13 1
(m) x = − (n) x = (o) x = – (p) x = 1 1. CDI , HGI 2. ABEF, ABCG, ABDH, CEFG, HDEF 3. 7 polygons
3 4 3
4. Trapezium
3. 8. 4. 288, 296, 304 5. 19, 20, 21 Quick Check 5. Parallelogram
6. 60° each 7. 57, 76 Concave polygon
8. Robert: 10 years, Father: 40 years 9. 23 metres
10. First prize: `600, Second prize: `500, Third prize: `400 Practice Time 3A
Think and Answer 1. (a) (ii) and (iv) (b) (i), (iii), (v) and (vi)
1. 5 years 2. 18 years 2. Polygons: (a), (c), (d)
3. Concave polygons: (a), (c), (e), and (g)
Practice Time 2B Convex polygons: (b), (d), (f), and (h)
1. (a) x = −1 (b) x = −21 (c) x = 4 (d) x = –11 4. Polygons which are equiangular and equilateral are called regular
64 40 polygons.
(e) x = 1 (f) x = 33 (a) Square (b) Hexagon (c) Decagon
7 5. (a) 14 (b) 27 (c) 35 6. 2
2. (a) m = 2 (b) x = 22 (c) x = 71 (d) m = 7 Think and Answer
13 7 2 360° ≈
.
4 No, because 22° 16 37 , it is not a natural number.
(e) x = 19 (f) x = −
5 Practice Time 3B
3. 7,8 and 9 4. Brother: 20 pies; Friend: 10 pies 5. 72 1. 140° 2. 30° 3. 4 sides
6. 42 and 56 7. 16 4. 120°; Minimum possible number of sides in a regular polygon is 3 and
Quick Check 360
Mohan’s age: 20 years 3 = 120.
Ram’s age: 28 years 5. 9 sides 6. (a) x = 80° (b) x = 115°
Practice Time 2C 7. (a) 360° (b) 360°
1. (a) x = 2 (b) x = 13 (c) x = 1 (d) x = 3 8. (a) 360°
3 20 39 (b) Yes, x = y = z = p = q = r because the given polygon is a regular
(e) x = 35 (f) x = 4 (g) x = 1 (h) x = − 21 polygon.
24 2 2 (c) (i) 60° (ii) 120° 9. 3 : 1 10. 12
2. y = 3 3. Mohan’s age: 32 years; Gopal’s age: 40 years Think and Answer
4. A’s present age = 21 years; B’s present age = 27 years No, it is not possible.
5. 3 6. 72 Quick Check
7
Brain Sizzlers 1. x = 60° 2. x = 140°
9824118223 Think and Answer
Mental Maths No, 105° + 160° + 60° + 45° = 370° > 360°
1. No 2. 4 3. Transposition Think and Answer
4. −2 5. 31 6.5 cm

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