unit 1 test preview

What is a rational number ?

• A rational number  is a number that cannot be written as a fraction.
• A rational number is a number that can be written as a ratio of two integers.

• A rational number cannot be a repeating  decimal.

When you multiply two rational numbers, the sum is...

• always rational

• sometimes rational, sometimes irrational

• always irrational

• never rational

Irrational Numbers....

• cannot be represented as a simple fraction
• can be represented as a fraction
• can be a repeating decimal

When you add two rational numbers, the sum is...

• always rational

• sometimes rational, sometimes irrational

• always irrational

• never rational

• irrational

• rational

• integer

• whole number

• natural number

When you add a rational number and irrational number, the sum is...

• always rational

• sometimes rational, sometimes irrational

• always irrational

• mostly irrational

What is the following a model of?

• the sum of two irrational numbers

• the sum of two rational numbers

• a rational number plus an irrational number which is rational

• a rational number plus an irrational number which is irrational

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

• always rational

• sometimes rational, sometimes irrational

• always irrational

• mostly irrational

• irrational

• rational

• integer

• whole number

• fraction

•  Sum of rational and irrational, so it is irrational

• Sum of two irrationals, so it is irrational

• Product of two irrationals, so it is irrational 

• Product of two rationals, so it is rational