ICSE ICSE Class 8 - CISCE Question Bank Solutions

Multiply the rational number, given below, by one (1):

0

Find the reciprocal (multiplicative inverse) of:

`(-3)/5xx(-1)/13`

Multiply the rational number, given below, by one (1):

`(-8)/13`

Multiply the rational number, given below, by one (1):

`(-6)/(-7)`

For the pair of rational numbers, given below, verify that the multiplication is commutative.

`(-1)/5 "and" 2/9`

For the pair of rational numbers, given below, verify that the multiplication is commutative.

`5/(-3) "and" 13/(-11)`

For the pair of rational numbers, given below, verify that the multiplication is commutative.

`3  "and" (-8)/9`

Verify That`("x"+"y") xx"z"="x"xx"z"+"y"xx"z"`,If

`"x"=4/5,"y"=(-2)/3 and "z"=-4`

For the pair of rational numbers, given below, verify that the multiplication is commutative.

`0  "and" (-12)/17`

Verify that `("x"+"y")xx"z"="x"xx"z + y"xx"z",if`

`"x"=2," y"=4/5and "z"=3/(-10)`

Verify that `"x"xx("y"-"z")="x"xx"y"-"x"xx"z,"` if 

`"x"=4/5,"y"=-7/4and"z"=3`

Verify that `"x"=3/4,"y"=8/9and "z"=-5`

Name the multiplication property of rational number show below:

`3/5xx(-8)/9=(-8)/9xx3/5`

Name the multiplication property of rational number show below:

`(-3)/4xx(5/7xx(-8)/15)=((-3)/4xx5/7)xx(-8)/15`

Name the multiplication property of rational number show below:

`4/5xx(3/(-8)+(-4)/7)=4/5xx3/(-8)+4/5xx(-4)/7`

Name the multiplication property of rational number show below:

`(-7)/5xx5/(-7)=1`

Name the multiplication property of rational number show below:

`8/(-9)xx1=1xx8/(-9)=8/(-9)`

Name the multiplication property of rational number show below:

`(-3)/4xx0=0`

Fill the Blank:

The product of two positive rational numbers is always ……………

Fill in the blank:

The product of two negative rational numbers is always ……………