Common Denominator Fractions

What do you need to have when adding unlike fractions

• common denominator

• common numerator

• common numerator and denominator

• common fractions

• <
• >
• =

Is the fraction 1/3 equivalent to 4/12?

• Yes

• No

What must you have to add and subtract fractions?

• Common numerators

• Different numerators

• Different denominators

• Common denominators

Find a common denominator for the fractions $rac{5}{8}$ and $rac{3}{10}$.

• 30

• 40

• 50

• 60

Tags

DOK Level 2: Skill/Concept

CCSS.4.NF.A.2

Which fraction is smaller: $\frac{3}{7}$ or $\frac{4}{9}$? Use a common denominator to compare.

• $\frac{3}{7}$

• $\frac{4}{9}$

Tags

DOK Level 2: Skill/Concept

CCSS.4.NF.A.2

Which fraction is smaller: $rac{1}{3}$ or $rac{2}{5}$? Use a common denominator to compare.

• $rac{1}{3}$

• $rac{2}{5}$

Tags

DOK Level 2: Skill/Concept

CCSS.4.NF.A.2

You must find the (a)   before you can add or subtract fractions with unlike denominators.

• common denominator

• common numerator

• multiple

• simplified fraction

Find a common denominator for the fractions $rac{1}{4}$ and $rac{2}{5}$.

• 10

• 15

• 20

• 25

Tags

DOK Level 2: Skill/Concept

CCSS.4.NF.A.2

Find a common denominator for the fractions $rac{3}{4}$ and $rac{2}{3}$.

• 6

• 9

• 12

• 15

Tags

DOK Level 2: Skill/Concept

CCSS.4.NF.A.2