If we can add and subtract fractions , that will help us in this lesson. Let's try a review problem now.
Find the value of \,\dfrac{3}{5}+\dfrac{3}{4}.
Before we add or subtract fractions, we must first make sure that the fractions have the same denominator.
How to compare the size of statements that involve fractions.
We want to compare \dfrac{8}{12} to \dfrac{1}{12}+\dfrac{2}{4}.
Convert \dfrac{2}{4} into twelfths.
Write the symbol, <, > or =, that makes the statement true:\dfrac{8}{12} ⬚ \dfrac{1}{12}+\dfrac{2}{4}
We can use area models to compare the size of statements that involve fractions.
This video looks at comparing statements that involve mixed numbers
We want to compare 8\dfrac{9}{10}-2\dfrac{1}{5} to 6\dfrac{3}{5}.
Convert 2\dfrac{1}{5} and 6\dfrac{3}{5} into tenths.
Write the symbol, <, > or =, that makes the statement true.8\dfrac{9}{10}-2\dfrac{1}{5} \,⬚ \, 6\dfrac{3}{5}
We can use area models to compare the fraction parts of mixed number statements.
This video will show us how to write and use number sentences with fractions.
Hannah had climbed one seventh of the ladder to the roof when she realised she'd forgotten her phone, so went back down to get it.
Complete the number sentence that describes how far in total Hannah has climbed once she has returned to the bottom of the ladder.
Hannah has climbed ⬚ seventh plus ⬚ seventh of the length of the ladder.
Evaluate the statement and then compare the values.
To help solve the statement, draw a representation (a number line or rectangle).