USA 1 and 2 Review

Front

What is the value of the number composed of 4 hundreds, 2 tens, and 5 tenths?

Back

420.5

Front

How do you calculate the perimeter of a rectangle?

Back

Perimeter = 2 × (length + width).

Front

If Damien bought a gallon of milk for $3.49 and a box of cereal for $4.29, and used a coupon for $0.75 off, what is the total amount he needs to pay?

Back

$7.03

Front

What is the standard form of the number represented by (5 × 100) + (8 × 10) + (6 × 1/10) + (4 × 1/100)?

Back

580.64

Front

Arrange the decimals 0.18, 0.25, 0.12, and 0.3 in ascending order.

Back

0.12, 0.18, 0.25, 0.3

Front

What is expanded form in mathematics?

Back

Expanded form is a way to write numbers that shows the value of each digit. For example, 345 = (3 × 100) + (4 × 10) + (5 × 1).

Front

What is a decimal?

Back

A decimal is a fraction whose denominator is a power of ten, represented with a decimal point. For example, 0.5 is a decimal.

Front

How do you convert a decimal to a fraction?

Back

To convert a decimal to a fraction, write the decimal over its place value and simplify. For example, 0.75 = 75/100 = 3/4.

Front

What is the difference between perimeter and area?

Back

Perimeter is the distance around a shape, while area is the amount of space inside a shape.

Front

What does it mean to compare decimals?

Back

Comparing decimals involves determining which decimal is greater, lesser, or if they are equal.