Fractions, Ratios, Percent

By the end of this unit, you will be able to:

A2 Represent fractions and decimals to thousandths
A9 Represent fractions in decimal form
B5 Add and subtract simple fractions using models
A3 Write and interpret ratios, comparing part to part and part to whole
A4 Demonstrate an understanding of equivalent ratios
A5 Demonstrate an understanding of the concept of percent as a ratio

Fractions Introduction  (BrainingCamp App)

Try it!

Changing Fractions with Denominators of 
10, 100 & 1000 to Decimals

If the fraction has 10, 100 or 1000 as the denominator, we know that:

To convert  to a decimal, write 37 so that the last digit appears in the hundredths column: 0.37.   From this we see:

Fractions with the denominators 10, 100, and 1000 can be easily changed to decimals, just remember to place the numbers in the tenths, hundredths, or thousandths position.

Changing Fractions to Decimals 

If the fraction doesn't have 10, 100 or 1000 as the denominator, change it to an equivalent fraction which does, then convert to a decimal.

Try it on Math Playground!

Common Denominators

Adding & Subtracting

Exploring Fractions - Make a Smoothie!

Exploring Fractions - In Hotels & Restaurants

Ratio Spy Guys

Try it

Percent  Spy Guys

Try it    

Fractions, decimals, ratios and percentages are just different ways of showing the same value!

A half can be written as a...

Fraction: 1/2
Decimal: 0.5

Ratio:     1:2
Percent: 50%

A quarter can be written  as...

Fraction: 1/4
Decimal: 0.25
Ratio:     1:4
Percent: 25%

Kowalyk 2013