Rational Numbers Class 8

A number of the form p/q is said to be a rational number if

• p and q are integers

• p and q are integers and p is not equal to zero.

• p and q are integers and q is not equal to zero.

• and q are integers and p and q both are not equal to zero.

Tags

CCSS.4.NF.B.4A

CCSS.4.NF.B.4B

-(-x) is same as

• -x

• x

• 1/x

• -1/x

Tags

CCSS.7.NS.A.1B

Addition is associative for

• Natural numbers

• Whole numbers

• Rational numbers

• All of these

Tags

CCSS.7.NS.A.1D

Between any two rational numbers, there lie

• two rational numbers

• no rational number

• infinite rational numbers

• infinite fractions

Tags

CCSS.6.NS.C.7A

CCSS.6.NS.C.7B

If x be any rational number, than x+0 is

• -x

• 0

• x

• 1/x

Tags

CCSS.7.NS.A.1B

Reciprocal of x is

• -x

• 1/x

• x+1

• x

Tags

CCSS.6.EE.A.2

CCSS.6.EE.B.6

If y be the reciprocal of rational number x, then the reciprocal of y will be

• x

• y

• x/y

• y/x

Additive identity of rational numbers is

• 1

• -1

• x

• 0

Tags

CCSS.7.NS.A.1B

Rational numbers are not closed under

• Subtraction

• Division

• Addition

• Multiplication

Tags

CCSS.HSN.RN.B.3

The additive inverse of a/b is

• -b/a

• b/a

• a/b

• -a/b

Tags

CCSS.7.NS.A.1B