8th grade Ch 1 L10

Name all sets of numbers to which each real number belongs. 1. 0.050505...

• Rational numbers, Real numbers

• Irrational numbers, Real numbers

• Whole numbers, Rational numbers

• Natural numbers, Real numbers

Name all sets of numbers to which each real number belongs. 2. -√64

• Integer, Rational numbers, Real numbers

• Irrational numbers, Real numbers

• Whole numbers, Rational numbers, Real numbers

• Natural numbers, Rational numbers, Real numbers

Name all sets of numbers to which each real number belongs. 3. √17

• Irrational numbers, Real numbers

• Rational numbers, Real numbers

• Whole numbers, Real numbers

• Natural numbers, Real numbers

Fill in each ○ with <, >, or = to make a true statement. 4. √15 ○ 3.5

• <

• >

• =

• None of these

Fill in each ○ with <, >, or = to make a true statement. 5. √2.25 ○ 150%

• =

• <

• >

• ≤

Fill in each ○ with <, >, or = to make a true statement. 6. √6.2 ○ 2.4

• >

• <

• =

• None of these

Order the set {√5, 220%, 2.25, 2.2} from least to greatest. Verify your answer by graphing on a number line.

• 2.2, 2.25, √5, 220%

• 2.2, √5, 2.25, 220%

• 2.25, 2.2, √5, 220%

• √5, 2.2, 2.25, 220%

The formula A = √[s(s – a)(s – b)(s – c)] can be used to find the area A of a triangle. The variables a, b, and c are the side measures and s is one half the perimeter. Use the formula to find the area of a triangle with side lengths of 7 centimeters, 9 centimeters, and 10 centimeters.

• Area ≈ 31.89 square centimeters

• Area ≈ 28.50 square centimeters

• Area ≈ 35.00 square centimeters

• Area ≈ 25.00 square centimeters

Real numbers are different from irrational numbers because:

• real numbers include both rational and irrational numbers, while irrational numbers are only a subset of real numbers

• irrational numbers include all real numbers

• real numbers are only whole numbers, while irrational numbers are fractions

• irrational numbers are not numbers at all

Name all sets of numbers to which each real number belongs. 1. 2/3 ____________

• Rational numbers

• Irrational numbers

• Whole numbers

• Imaginary numbers