In this chapter, we provide KSEEB SSLC Class 8 Maths Chapter 7 Rational Numbers Ex 7.1 for English medium students, Which will very helpful for every student in their exams. Students can download the latest KSEEB SSLC Class 8 Maths Chapter 7 Rational Numbers Ex 7.1 pdf, free KSEEB SSLC Class 8 Maths Chapter 7 Rational Numbers Ex 7.1 pdf download. Now you will get step by step solution to each question.
Karnataka State Syllabus Class 8 Maths Chapter 7 Rational Numbers Ex 7.1
Karnataka Board Class 8 Maths Chapter 7 Rational Numbers Ex 7.1
1. Identify the property in the following statements.
Question (i)
2 + (3 + 4) = (2 + 3) + 4
Answer:
Associative property of addition.
Question (ii)
2 × 8 = 8 × 2
Answer:
Commutative property of multiplication
Question (iii)
8 × (6 + 5) = (8 × 6) + (8 × 5)
Answer:
Distributive property of multiplication over addition in integers.
Question 2.
Find the additive inverse of the following integers.
Answer:
Integer Additive inverse
6 -6
9 -9
123 -123
-76 76
-85 85
1000 -1000
3. Find the integer m in the following:
Question (i)
m + 6 = 8
Answer:
m = 8 – 6
Question (ii)
m + 25 = 15
Answer:
m =15 – 25
m = -10
Question (iii)
m – 40 = -26
Answer:
m = – 26 + 40
m = 14
Question (iv)
m + 28 = – 49
Answer:
m = – 49 – 28
m = – 77
Question 4.
Write the following in increasing order: 21, -8, -26, 85, 33, -333, -210, 0, 2011
Answer:
-333 < -210 < -26 < -8 < 0 < 21 < 33 < 85 < 2011.
-333, -210, -26, -8, 0, 21, 33, 85, 2011
Question 5.
Write the following in decreasing order: 85, 210, -58, 2011, -1024, 528, 364, -10000,12
Answer:
2011 > 528 > 364 > 210 > 85 > 12 > – 58 > -1024 < -10,000
2011, 528, 364, 210, 85, 12, -58, -1024, -10,000.
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