1-1 Adding & Subtracting Decimals

​Quizizz Lesson Expectations

​You must COPY ALL EXAMPLES into your notebook, just like we do in class. If you get to a practice problem on your own, please copy that into your notebook as well.

Some text here about the topic of discussion

​1-1 Adding & Subtracting Decimals

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​10/26/22

STRATEGY for adding & subracting decimals:

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LINE UP THE DECIMAL POINTS!!!!!​

​Example 1 - COPY in notebook

​Kim and Martin swam 50 meters. Martin took 0.26 second longer than Kim. What was Martin's time in the race?

ADD the numbers. LINE UP the decimals.

1​

• 50.09

  +0.26

  50.35

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Martin's Time: 50.35 seconds​

Multiple Choice

Kaylin purchases dog food for $7.42 and a dog toy for $3.54. What is the total cost of her purchases?

• $11.96

• $  4.12

• $10.96

• $  3.88

Multiple Choice

Stefanie buys a Disney fast pass for $2.50 and Minnie Mouse ears for $0.35. There is no sales tax. What is the total cost for the two items?

• $2.25

• $7.00

• $4.65

• $2.85

Amy ran a race in 20.7 seconds. Katie finished the race 0.258 seconds faster than Amy. How long did it take Katie to run the race?

​Copy in your notebook.

Some text here about the topic of discussion

SUBTRACT. Line up the decimals. Regroup as needed.

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​Katie ran the race in 20.442 seconds.​

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Multiple Choice

What is the difference of 14.35 and 6.73? 

• 7.62

• 7.52

• 10.08

• 12.42

Multiple Choice

Meredith gives the waitress $20 to pay for her meal. The total of the meal is $16.16. How much change will Meredith receive from the waitress?

• $36.16

• $15.96

• $  4.94

• $  3.84

Multiple Choice

A video game originally costs $59.99. The store marks the price down to 24.49. What is the difference in the original price and the marked down price?

• $84.48

• $8448

• $35.50

• $3550

Multiple Choice

2 - 1.54 = ?

• 1.54

• 3.54

• 0.46

• 1.46

Multiple Choice

WHAT OPERATION?

Jackie has $16.75. Samantha has $11.23. How much more money does Jackie have than Samantha?

• Addition

• Subtraction

• Multiplication

• Division

Multiple Choice

WHAT OPERATION

Miranda went to the store and bought a pen for $1.48, a book for $5.65 and a pencil for a quarter. How much did Miranda spend at the store?

• Addition

• Subtraction

• Mulitplication

• Division

Multiple Choice

Find the sum. 3.98 + 6.02

• 9

• 10

• 11

• 8

Fill in the Blanks

56.7-3.56

Multiple Choice

13.08 + 7.456

• 21.536

• 20.536

• 205.36

• 19.536