Adding and Subtracting Decimals

Question 1

Use the interactive number line to find -3.2 - 4.

Revolt · Accepted Answer

-7.2

Question 2

Which did you include in your explanation? Check all that apply.

Revolt · Accepted Answer

These numbers are not clustered around a common number.

Question 3

Question 3

Revolt · Accepted Answer

Answer

Question 4

12.2 + –4.3 + 18.6 + (–18.6) additive inverseassociative property✔ commutative propertydistributive property

Revolt · Accepted Answer

✔ commutative property; 12.2 + –4.3 7.9: commutative property; 12.2 + –4.3 7.9: associative property; 12.2 + –4.3 7.9: additive inverse

Question 5

On Friday, Elsbeth deposited her pay check for $872.56. What was the account’s final total?

Revolt · Accepted Answer

$878.28

Question 6

A squirrel climbs 15 feet up a tree. He then runs 8.26 feet down the tree. How much further does the squirrel need to go before reaching the ground?

Revolt · Accepted Answer

6.74 feet

Question 7

The decimal -2.97 is the solution to which subtraction problem?

Revolt · Accepted Answer

-6.1 - (-3.13)

Question 8

Larry has $20 to spend at the store. He plans to purchase five items that cost $5.79, $7.63, $3.46, $2.99, and $3.65. Larry estimated his total cost to make sure he has enough money for his purchases. Is his estimate accurate? Explain why or why not. $5 + $7 + $3 + $2 + $3 = $20

Revolt · Accepted Answer

Answer

Question 9

Round to the nearest whole dollar to estimate how much change Shawn will receive.$12✔ $13$14$23

Revolt · Accepted Answer

✔ $13; $13; $12.94

Question 10

Question 11

Revolt · Accepted Answer

1.1; 1.142

Adding and Subtracting Decimals Answers

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