Module 5 Review!

We can show fractions using number lines or area models.

On a number line, remember to count then number of tick marks (NOT INCLUDING ZERO) to find the number of equal parts.

An area model shows a picture (usually a shape) split into the number of parts (denominator). The shaded parts shows the numerator.

We can find equivalent fractions by comparing models with the same value but different parts.

Multiple: the product of multiplying 2 numbers together

Think about skip counting, multiples of 2: 2, 4, 6, 8, 12, 14...

LCM: Least Common Multiple: Smallest multiple 2 numbers have in common

To find: list the multiples for both numbers until you find one in common! Circle the smallest one. This is the LCM!

Factor: numbers that multiply together to make another number (2 and 3 are factors of 6)

Greatest common factor: the biggest factor that 2 numbers have in common.

To find GCF: list all the factor pairs for each number (think about multiplying each number by 1, then, 2, then 3, then 4...)

Circle any they have in common. Choose the greatest one.

Common denominator: when 2 or more fractions have the same denominator

We need common denominators (the same number of pieces) to be able to add or subtract fractions

Easiest Common Denominator: multiply the denominators together to find a common multiple. This will be the common denominator.

Then, multiply each fraction by the others' denominator to find equivalent fractions.