Decimals & Coordinates (EDM Unit 4)

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 that represents 5/10.

Front

How do you round a decimal to the nearest whole number?

Back

To round a decimal to the nearest whole number, look at the digit to the right of the decimal point. If it is 5 or greater, round up. If it is less than 5, round down.

Front

What is the value of 0.37 in a hundreds grid?

Back

0.37 represents 37 out of 100 parts in a hundreds grid.

Front

How do you estimate a decimal?

Back

To estimate a decimal, round it to the nearest whole number or a simpler decimal that is easier to work with.

Front

What does the coordinate (6, 8) represent?

Back

The coordinate (6, 8) represents a point on a grid where 6 is the x-coordinate (horizontal) and 8 is the y-coordinate (vertical).

Front

What is expanded form of a decimal?

Back

Expanded form of a decimal shows the value of each digit. For example, 8.42 in expanded form is 8 + 0.4 + 0.02.

Front

What is the difference between a decimal and a fraction?

Back

A decimal is a way of expressing a number that is not whole, using a decimal point, while a fraction represents a part of a whole using a numerator and denominator.

Front

How do you find the equivalent decimal for a fraction?

Back

To find the equivalent decimal for a fraction, divide the numerator by the denominator. For example, 1/4 = 0.25.

Front

What is the purpose of a hundreds grid?

Back

A hundreds grid is used to visually represent decimal values and help understand the concept of parts of a whole.

Front

How do you plot a point on a coordinate grid?

Back

To plot a point on a coordinate grid, start at the origin (0,0), move along the x-axis to the x-coordinate, and then move up or down to the y-coordinate.