REVIEW: Adding/Subtracting Fractions

REVIEW: Adding/Subtracting Fractions

ADDING AND SUBTRACTING FRACTIONS

when we are adding or subtracting fractions:

• like denominators

• unlike denominators

like denominators

kepp denominator, add/subtract numerators

Multiple Choice

Solve

• 5/10

• 7/10

• 1/8

• 10/8

Multiple Choice

Solve

• 5/9

• 10/9

• 4/9

• 3/9

Multiple Choice

Before you add or subtract fractions what must be the same?

• Numerator

• Denominator

• Just add

• Just subtract

Multiple Select

What could be a common denominator for this problem ⁴/₆ + ²/₃ ?

• 3

• 6

• 9

• 12

Multiple Choice

Dora the elephant used to eat 2 3/4 tons of food each month. Now she is on a diet and eats only 1 7/8 tons. By how many tons was Dora's food decreased each month?

• 1 4/4 tons

• 7/8 ton

• 2 1/8 tons

• 1/8 ton

Multiple Choice

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

Multiple Choice

Robert made a fruit salad with 11/12 of a pound of melon and 1/6 of a pound of berries. How many pounds of fruit did Robert use in all?

• 1 1/12
• 3/4
• 2/3
• 1 1/2