1.7 Add and Subtract Decimals Through the Thousandths

Multi-Step

Team A spent 61.242 seconds and 59.438 seconds running a relay race. Team B spent 60.561 seconds and 60.289 seconds running the relay race. Which statement is true?

• Team A won by 0.17 second.

• Team B won by 0.17 second.

• Team A won by 1.17 seconds.

• Team B won by 1.17 seconds.

Manuel is walking from his home to his school. He has walked 0.142 mile so far and has 0.088 mile left to walk. How far is Manuel’s home from school?

• 0.054 mile

• 0.12 mile

• 0.23 mile

• 1.022 miles

Multi-Step

Music & Movie Mart is selling used CDs for $6.99 each and used DVDs for $8.49 each. You have $30 to spend. Which of these combinations could you buy?

• Two CDs and two DVDs

• Three CDs and one DVD

• Three CDs and three DVDs

• One CD and three DVDs

Toni has a ribbon that is 2.75 meters long. She cuts off 0.345 meter. How much of the ribbon does Toni have left?

• 3.095 meters

• 2.715 meters

• 2.785 meters

• 2.405 meters

Find the unknown number in the pattern.

Then write a description for the pattern

1.0, 2.1, 3.2, 4.3. ____ 6.5, 7.6

• add 1.1

• 5.3

• 5.4

• add 1.2

Find the unknown number in the pattern.

Then write a description for the pattern

5.03, 5.00, 4.97, 4.94 ___ 4.88

• add 0.03

• subtract 0.03

• 4.97

• 4.91

Abby finished a biking race in 21.39 minutes. Juanita took 19.59 minutes to finish. How much longer did Abby take to finish the race than Juanita?

The sum of two numbers is 5.036. One number has a 4 in the tenths place and a 7 in the thousandths place. The other number has a 1 in the ones place and an 2 in the hundredths place. What are the two numbers?

• 3407

• 1014

• 1629

• 4032

Dara spends $13.02 on sandals, $9.85 on shorts, and $15.20 on a hat. How much change does she receive back from $50?

• $10.93

• $11.93

• $11.34

• $12.67

Ling’s relay team ran the first part of the race in 28.134 seconds, the second part in 17.922 seconds, and the third part in 34.023 seconds. By how much did the relay team beat the champions, who ran the race in 83.736 seconds?

• 3.412 seconds

• 3.657 seconds

• 3.327 seconds

• 4.073 seconds