Lesson 1-2 Review

What is the name for the top number in a fraction?

• whole number

• numerator

• fraction part

• denominator

Answer explanation

The top number in a fraction is called the numerator. It represents how many parts of the whole are being considered, while the bottom number, the denominator, indicates the total number of equal parts.

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

What is the name for the bottom number in a fraction?

• fractional part

• whole number

• denominator

• numerator

Answer explanation

In a fraction, the bottom number is called the denominator. It indicates how many equal parts the whole is divided into, while the top number, or numerator, shows how many of those parts are being considered.

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

This group of numbers includes decimals, fractions and percents.

• Whole Numbers

• Natural Numbers

• Rational Numbers

• Irrational Numbers

Answer explanation

Rational numbers include all numbers that can be expressed as a fraction, decimal, or percent. Whole numbers and natural numbers do not include decimals or fractions, while irrational numbers cannot be expressed as fractions.

How do you convert a fraction to a decimal?

• Multiply the numerator by the denominator.

• Add the numerator and denominator together.

• Subtract the denominator from the numerator.

• Divide the numerator by the denominator.

Answer explanation

To convert a fraction to a decimal, you divide the numerator (the top number) by the denominator (the bottom number). This gives you the decimal equivalent of the fraction.

Per cent literally means "by _____."

• 100

• 1000

• 12

• 10

Answer explanation

The term 'per cent' comes from the Latin 'per centum', meaning 'by the hundred'. Therefore, it literally means 'by 100', making '100' the correct answer.

Match the number and the number type.

• Terminating Decimal

• 0.345

• Percent

• 0.33333333

• Zero

• 0

• Fraction

• 1/3

• Repeating decimal

• 35.5%

Tags

CCSS.7.NS.A.2D

CCSS.8.NS.A.1

What do you get when you convert 0.22 to a fraction?

• 5/22

• 1/4

• 2/9

• 11/50

Answer explanation

To convert 0.22 to a fraction, recognize it as 22/100. Simplifying this fraction by dividing both the numerator and denominator by 2 gives 11/50, which is the correct answer.

What is 0.345 as a percent?

• 34.5%

• 3.45%

• 34.05%

• 0.0345%

Answer explanation

To convert 0.345 to a percent, multiply by 100. Thus, 0.345 × 100 = 34.5%. Therefore, the correct answer is 34.5%.

What is 9% as a decimal?

• 0.009

• 0.09

• 9.0

• 0.9

Answer explanation

To convert a percentage to a decimal, divide by 100. Thus, 9% becomes 9 ÷ 100 = 0.09. Therefore, the correct answer is 0.09.

If I convert 2/9 to a decimal, what type of decimal do I get?

• terminating decimal

• repeating decimal

• whole number

• integer

Answer explanation

Converting 2/9 to a decimal gives 0.222..., which has the digit '2' repeating indefinitely. Therefore, it is classified as a repeating decimal.

Tags

CCSS.7.NS.A.2D

CCSS.8.NS.A.1