Solving Problems by adding /subtracting with unlike denominators

What does Ms. Parten say you should think of when you see unlike denominators?

• green flag

• white flag

• pizza

• red flag

Tags

CCSS.4.NF.A.2

Unlike fractions?

• fractions with the same number on top

• fractions with the same number on the bottom

• fractions with the same numerator and denominators

• fractions with different numbers on the bottom ( denominators)

Tags

CCSS.4.NF.A.2

Check all of the fractions that would be like fractions with

 $\frac{4}{5}$  

•  $\frac{1}{8}$  

•  $\frac{3}{5}$  

•  $\frac{2}{5}$  

•  $\frac{1}{5}$  

Tags

CCSS.3.NF.A.3

Altogether

• Add

• Subtract

Tags

CCSS.4.MD.A.2

CCSS.4.NBT.B.4

CCSS.4.OA.A.3

Can you add or subtract fractions with unlike fractions ?

• NO

• YES

Tags

CCSS.4.NF.A.2

CCSS.4.NF.C.5

Click all the words that mean addition

• sum

• all

• total

Tags

CCSS.4.NBT.B.4

Mixed number:

• a number composed of a whole number and a fraction.

• a fraction in which the numerator is greater than the denominator.

• a fraction with denominator greater than 10

• a whole number

When the denominators are not the same, I must find a...

• common numerator

• common denominator

• equivalent fraction

• mixed number

Tags

CCSS.4.NF.A.2

When adding or subtracting fractions, I NEVER add or subtract the...

• numerators

• denominators

• mixed numbers

• equivalent fractions

Tags

CCSS.4.NF.C.5

Is this a correct answer?

• Yes, the student correctly added.
• No, you cannot add unlike denominators
• No, 5 + 7 is not 12
• No, 2 + 3 is not 5

Tags

CCSS.4.NF.A.2