Multiplying and dividing rational numbers

Which best describes the length of one side of the square?

• Rational because it is 5 m

• Irrational because it is 5 m.

• Irrational because it is √20 m

• Rational because it is √20 m

If a and b represent a non-zero rational number, c represent an irrational number, then a - c simplifies to an _____________

• Rational Number

• Irrational number

• Rational

• Irrational

8,972,546.729

• Rational

• irrational

The reciprocal of a negative rational number _____

• is a positive rational number

• is a negative rational number

• can be either a positive or a negative rational number

• does not exist

When you multiply a rational number and irrational number, the product is...

• always rational

• sometimes rational, sometimes irrational

• always irrational

• mostly irrational

When you multiply a rational number and irrational number, the product is...

• always rational

• sometimes rational, sometimes irrational

• always irrational

• mostly irrational

What is the sum of an irrational number and a rational number?

• An integer

• Always rational

• Always irrational

• Either irrational or rational

 $\sqrt{6}\cdot\sqrt{3}$  is...

• Rational

• Irrational

Is the sum or product rational or irrational? √225 x √625

• Rational

• Irrational