Adding Like Units

When I add or subtract fractions I must have _________ units.

• denominator

• numerator

• like

• unlike

What like unit can I use for 1/10 and 1/3?

• 6

• 5

• 1

• 30

USE SCRATCH PAPER AND SOLVE THIS WORD PROBLEM:

The classroom made cookies. They used 1 1/4 cups of white flour for the chocolate chip cookies. They used 2 1/3 cups of flour for peanut butter cookis. How much flour did they use in total?

• 3 2/7 cups

• 3 7/12 cups

• 1 1/12 cups

• 1 2/7 cups

When adding decimals, you must always....

• Ignore the decimal point

• add like units

• add unlike units

• Subtract the numbers

Angie buys 6 feet of red ribbon and 8 feet of blue ribbon for a project.  How many inches of ribbon did Angie buy in all.

• 14 in.

• 168 in.

• 48 in.

• 150 in.

Juanita is making a butterfly costume. She needs 4 feet 8 inches of pink ribbon and 2 feet 10 inches of silver ribbon. What is the total amount of ribbon she needs for the costume?

• 6 feet 6 inches

• 6 feet 8 inches

• 7 feet 8 inches

• 7 feet 6 inches

Juanita is making a butterfly costume. She needs 4 feet 8 inches of pink ribbon and 2 feet 10 inches of silver ribbon. What is the total amount of ribbon Juanita needs for the butterfly costume?

• 6 feet 6 inches

• 6 feet 8 inches

• 7 feet 8 inches

• 7 feet 6 inches

Tags

4.8.C

Jessica is measuring two line segments. The first line segment is 30 cm long. The second line segment is 500 mm long. How long are the two line segments together? (answer in cm)

• 80 cm

• 800 cm

• 800 mm

• 80 mm

Gracyn is knitting a scarf. The scarf is 4.6 feet long. If she knits another 1.75 feet, how long will the scarf be?

• 6.35 feet

• 5.81 feet

• 5.35 feet

• 2.85 feet

7 cm 5 mm + 15 cm 8 mm

• 23 cm 3 mm

• 20 cm 6 mm

• 22 cm 13 mm

• 23 cm 13 mm