Understanding Fractions: Addition and Subtraction

What do you do with the denominators when adding fractions with the same denominator?

• Add the denominators

• Multiply the denominators

• None of the above

• Keep the denominator the same

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

What is the first step in adding fractions with different denominators?

• Subtract the denominators

• Multiply the fractions

• Find the lowest common denominator

• Add the numerators

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

How do you convert one fourth to an equivalent fraction with eight as the denominator?

• Multiply top and bottom by 4

• Multiply top and bottom by 2

• Divide top and bottom by 2

• None of the above

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

What is the result of adding two eighths and three eighths?

• Four eighths

• Five eighths

• Six eighths

• One eighth

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

What common denominator do you use for fractions with denominators 10 and 15?

• 50

• 25

• 30

• 20

After finding a common denominator, what is the next step in subtracting fractions?

• Add the numerators

• Subtract the numerators

• Multiply the numerators

• Divide the numerators

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

What fraction results from subtracting four thirtieths from nine thirtieths?

• Five thirtieths

• Two thirtieths

• Six thirtieths

• Three thirtieths

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

How do you simplify the fraction five thirtieths?

• Add five

• Multiply by five

• Subtract five

• Divide by five

What is the simplified form of five thirtieths?

• One fourth

• One tenth

• One sixth

• One fifth

What should you always check after adding or subtracting fractions?

• If the fraction can be multiplied

• If the fraction can be divided

• If the fraction can be subtracted

• If the fraction can be simplified

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2