# Worksheet on Properties of Addition of Rational Numbers

Practice the questions given in the worksheet on properties of addition of rational numbers. The questions are based on closure property, commutative property, associative property, existence of additive identity property and existence of additive inverse property of addition of rational numbers.

1. Verify the following:

(i) -12/5 + 2/7 = 2/7 + -12/7

(ii) -5/8 + -9/13 = -9/13 + -5 /8

(iii) 3 + -7/12 = -7/12 + 3

(iv) 2/-7 + 12/-35 = 12/-35 + 2/-7

2. Fill in the blanks:

(i) (-3/17) + (-12/5) = (-12/5) + (_____ )

(ii) -9 + (-21/8) = (_____ ) + (-9)

(iii) (-8/13 + 3/7) + (-13/4) = (_____ ) + [3/7 + (-13/4)]

(iv) -12 + (7/12 + -9/11) = (-12 + 7/12) + (_____ )

(v) 19/-5 + (-3/11 + -7/8) = {19/-5 + (_____ )} + -7/8

(vi) -16/7 + _____ = _____ + -16/7 = -16/7

3. Find the additive inverse of each of the following:

(i) 1/3

(ii) 23/9

(iii) -18

(iv) -17/8

(v) 15/-4

(vi) -16/-5

(vii) -3/11

(viii) 0

(ix) 19/-6

(x) -8/ -7

4. (i) Which rational number is its own additive inverse?

(ii) Is addition commutative on rational numbers?

(iii) Is addition associative on rational numbers?

(iv) Is subtraction commutative on rational numbers?

(v) Is subtraction associative on rational numbers?

Answers for the worksheet on properties of addition of rational numbers are given below to check the exact answers of the above questions on rational numbers.

Answers:

2. (i) -3/17

(ii) -21/8

(iii) -8/13

(iv) -9/11

(v) -3/11

(vi) 0, 0

3. (i) -1/3

(ii) -23/9

(iii) 18

(iv) 17/8

(v) 15/4

(vi) -16/5

(vii) 3/11

(viii) 0

(ix) 19/6

(x) -8/7

4. (i) 0

(ii) Yes

(iii) Yes

(iv) No

(v) No

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Rational Numbers

What is Rational Numbers?

Is Every Rational Number a Natural Number?

Is Zero a Rational Number?

Is Every Rational Number an Integer?

Is Every Rational Number a Fraction?

Positive Rational Number

Negative Rational Number

Equivalent Rational Numbers

Equivalent form of Rational Numbers

Rational Number in Different Forms

Properties of Rational Numbers

Lowest form of a Rational Number

Standard form of a Rational Number

Equality of Rational Numbers using Standard Form

Equality of Rational Numbers with Common Denominator

Equality of Rational Numbers using Cross Multiplication

Comparison of Rational Numbers

Rational Numbers in Ascending Order

Representation of Rational Numbers on the Number Line

Addition of Rational Number with Same Denominator

Addition of Rational Number with Different Denominator

Addition of Rational Numbers

Properties of Addition of Rational Numbers

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Subtraction of Rational Numbers

Properties of Subtraction of Rational Numbers

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Multiplication of Rational Numbers

Properties of Multiplication of Rational Numbers

Rational Expressions Involving Addition, Subtraction and Multiplication

Division of Rational Numbers

Rational Expressions Involving Division

Properties of Division of Rational Numbers

To Find Rational Numbers