Rational Vs. Irrational

Which of the following number is rational?

• $\sqrt{127}$

• $\pi$

• $2.5$

• $8.98763...$

Tags

CCSS.8.NS.A.1

Which of the following numbers is irrational?

• $\sqrt{50}$

• $\sqrt{36}$

• $\sqrt{169}$

• $\sqrt{225}$

Tags

CCSS.8.NS.A.1

What kind of number is -3?

• rational
• irrational
• whole
• natural

Tags

CCSS.8.NS.A.1

What kind of number is   π   ?

• rational
• irrational
• whole
• integer

Tags

CCSS.8.NS.A.1

√121

• 12
• 10
• 11
• 3

Tags

CCSS.6.EE.A.1

The area of a square painting is 81 cm².  What is the side length of the painting?

• 40.5 cm
• 162 cm
• 6,561 cm
• 9 cm

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Irrational numbers...

• reduce to π

• never end and never repeat

• can sometimes be perfect squares

• must be negative

Tags

CCSS.8.NS.A.1

Which number is an integer?

• -1/2
• 0.2
• 3/4
• -2

Is -5/8 a rational number?

• yes
• no

Tags

CCSS.5.NBT.A.2

Which number is an integer?

• -1/2
• 0.2
• 3/4
• -2