Understanding Decimals and Ratios

Understanding and using percentages

Exploring geometric shapes

Studying probability and statistics

Learning about algebraic expressions

Fraction

Decimal

Term

Ratio

A variable separated by addition or subtraction

A number that can be written as a ratio

A number that represents a part of a whole

A number with a fractional part separated by a decimal point

Divide by 5

Subtract 5

Add 5

Multiply by 5

5 bags

4 bags

3 bags

2 bags

Count the total number of decimal places in the factors

Place the decimal point at the end

Ignore the decimal points

Place the decimal point at the beginning

42

0.42

4.2

420

By adding the same number to both terms

By rearranging the terms

By multiplying or dividing both terms by the same number

By subtracting the same number from both terms

Calculating the area of a circle

Measuring the length of a line

Finding the volume of a cube

Determining the percentage of battery left on a phone

A part of a whole expressed in hundredths

A whole number

A fraction with a denominator of 10

A decimal number