Here is the answer key for the Class 6 Mathematics 100-mark paper. Class 6 Mathematics – Answer Key
CLASS 6 MATHEMATICS – ANSWER KEY
SECTION A – MCQs
Q1.
- (b) 1,00,000
- (b) 6
- (c) 29
- (c) 0.75
- (c) 3
- (b) Right angle
- (c) 24 cm
- (b) 7
- (c) Equilateral
- (b) 6
Q2.
- 1,00,000
- 2
- 12
- −7
- 0.5
- 0
- side
- 100
- 3
- 20
SECTION B – VERY SHORT ANSWERS
Q3.
- 45,607 = 40,000 + 5,000 + 600 + 7
- HCF(24,36) = 12
- LCM(8,12) = 24
- Ascending order: −7, −2, 0, 5
- 3/5 + 1/5 = 4/5
- 7.50 − 3.25 = 4.25
- x + 8 = 17 → x = 9
- Perimeter = 2(9+5) = 28 cm
- 45° = Acute angle
- 15, 18
SECTION C – SHORT ANSWERS
Q4.
- 4,568 + 7,895 − 2,345 = 10,118
- 180 = 2² × 3² × 5
- 2/3 + 1/6 = 5/6
- 12.75 + 8.50 − 5.25 = 16.00
- 3x = 27 → x = 9
Q5.
- 250 ÷ 10 = 25 apples per box
- 12.5 − 4.75 = 7.75 m
- Area = 12×7 = 84 cm²; Perimeter = 2(12+7) = 38 cm
- Boys : Girls = 3:2; 18 boys → girls = 12
- 2a+5, a=7 → 14+5 = 19
SECTION D – CASE-BASED / COMPETENCY
Q6.
Given: Length = 30 m, Breadth = 20 m
- Perimeter = 2(30+20) = 100 m
- Area = 30×20 = 600 m²
- Two rounds = 2×100 = 200 m
- Fencing cost = 100×₹15 = ₹1,500
- Space inside = Area
Q7.
Data: Aman 4, Riya 7, Kabir 5, Neha 9, Tara 5
- Maximum = Neha
- Minimum = Aman
- Total = 4+7+5+9+5 = 30
- Difference = 9−4 = 5
- Average = 30÷5 = 6 books
SECTION E – LONG ANSWERS
Q8(1).
Length = 45 m, Breadth = 30 m
- Perimeter = 2(45+30) = 150 m
- Area = 45×30 = 1,350 m²
- Fencing cost = 150×₹20 = ₹3,000
Q8(2).
- Rice = 5×₹48 = ₹240
- Wheat = 3×₹35 = ₹105
- Sugar = 2×₹42 = ₹84
- Total = ₹240+₹105+₹84 = ₹429
FINAL ANSWERS AT A GLANCE
Section A:
1-b, 2-b, 3-c, 4-c, 5-c, 6-b, 7-c, 8-b, 9-c, 10-b
Key numerical answers:
HCF = 12; LCM = 24; 3/5+1/5 = 4/5; 7.50−3.25 = 4.25; x=9; Rectangle area = 84 cm²; Playground area = 600 m²; Average = 6; Final total = ₹429.