Standard Eight Mathematics>Chapter 1 - Numbers>Try these>Q 1

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8th Tamil Nadu Board

IMPORTANT

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Check whether associative property holds for subtraction and division of rational numbers.

Important Questions on Numbers

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8th Tamil Nadu Board

IMPORTANT

Standard Eight Mathematics>Chapter 1 - Numbers>Exercise 1.3>Q 1

Verify the closure property for addition and multiplication of the rational numbers

\frac{- 5}{7} and \frac{8}{9}

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8th Tamil Nadu Board

IMPORTANT

Standard Eight Mathematics>Chapter 1 - Numbers>Exercise 1.3>Q 2

Verify the commutative property for addition and multiplication for the rational numbers

\frac{- 10}{11}

and

\frac{- 8}{33}

.

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8th Tamil Nadu Board

IMPORTANT

Standard Eight Mathematics>Chapter 1 - Numbers>Exercise 1.3>Q 3

Verify the associative property for addition and multiplication for the rational numbers

\frac{- 7}{9}, \frac{5}{6}

and

\frac{- 4}{3}

.

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8th Tamil Nadu Board

IMPORTANT

Standard Eight Mathematics>Chapter 1 - Numbers>Exercise 1.3>Q 4

Verify the distributive property

a \times (b + c) = (a \times b) + (a \times c)

for the rational numbers

a = \frac{- 1}{2}, b = \frac{2}{3} and c = \frac{- 5}{6}

.

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8th Tamil Nadu Board

IMPORTANT

Standard Eight Mathematics>Chapter 1 - Numbers>Exercise 1.3>Q 5

Verify the identity property for addition and multiplication for the rational numbers

\frac{15}{19}

and

\frac{- 18}{25}

.

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8th Tamil Nadu Board

IMPORTANT

Standard Eight Mathematics>Chapter 1 - Numbers>Exercise 1.3>Q 6

Verify the additive and multiplicative inverse property for the rational numbers

\frac{- 7}{17}

and

\frac{17}{27}

.

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8th Tamil Nadu Board

IMPORTANT

Standard Eight Mathematics>Chapter 1 - Numbers>Exercise 1.3>Q 7

Closure property is not true for division of rational numbers because of the number.

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8th Tamil Nadu Board

IMPORTANT

Standard Eight Mathematics>Chapter 1 - Numbers>Exercise 1.3>Q 8

\frac{1}{2} - (\frac{3}{4} - \frac{5}{6}) \neq (\frac{1}{2} - \frac{3}{4}) - \frac{5}{6}

illustrates that subtraction does not satisfy the______ law of rational numbers.