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Day 5 - Common Core 4th Grade Mathematics - Domain 3 - Add and Subtract Fractions and Decimals
Transcript of Day 5 - Common Core 4th Grade Mathematics - Domain 3 - Add and Subtract Fractions and Decimals
FRACTIONS AND DECIMALS
On the FIFTH day of math review my teacher taught to me...
HOW TO ADD AND SUBTRACT FRACTIONS
4 - Fractions and Decimals
3 - Traditional Alogorithms
2 - Place Value and Whole Numbers
1- And what the operations mean.
ADDING FRACTIONS WITH LIKE DENOMINATORS
SUBTRACTING FRACTIONS WITH LIKE DENOMINATORS
Think of adding pieces of pizza or cake...
Now think of eating those pieces of pizza or cake... is it lunch time yet?
Hmm... what's that mean?
A unit fraction is a fraction with 1 as the numerator.
Are these unit fractions?
BUT WHAT DO WE DO WHEN THE DENOMINATORS ARE DIFFERENT?!
1. Find a common
What is a multiple 3 and 4 have in common?
2. Find equivalent
3. Add your new
4. Let's try it!
When the numerator is BIGGER than the denominator.
Which of these is improper?
When we have a whole number AND a fraction.
Which of these is mixed?
Write an example
of an improper fraction
Write an example
of a mixed number.
Adding and Subtracting
We've got this!
Stop at 2:05