Basic Operations on Rational Numbers

There are two rational number: p/q and r/q. Can they be added directly?

• Yes

• No

• Need to take LCM

• Cannot be determined

There are two rational number: p/q and q/r. Can they be multiplied directly?

• Yes

• No

• LCM must be taken first

• Cannot be determined

What will be the sum of these two Rational Numbers?

2/5 + 8/5

• 10/5

• 2

• -6/5

• 50/5

What will be the product of these two Rational Numbers?

5/10 x 3/10

• 15/100

• 3/20

• 10/150

• 2/30

pq/qr is the product of which two rational numbers?

• p/q and p/r

• p/q and q/p

• p/q and q/r

• r/q and 1/p