Division of Decimals

Strategies to Divide Decimals

Unit Test Review

by Mr. Lasaitis

Multiple Choice

Hugo wants a dirt bike! He buys one for $2,349.89. He will pay for the bike by paying the same amount each month for 12 months. What is the best estimate for how much he will pay each month? *Hint: this is a great time for a compatible number. What are the multiples of 12?

• $100 

   

• $250

• $200

• $300

​Explanation

​Hugo wants a dirt bike! He buys one for $2,349.89. He will pay for the bike by paying the same amount each month for 12 months. What is the best estimate for how much he will pay each month? *Hint: this is a great time for a compatible number. What are the multiples of 12?

Multiple Choice

Hugo wants a dirt bike! He buys one for $2,349.89. He will pay for the bike by paying the same amount each month for 12 months. What is the best estimate for how much he will pay each month? *Hint: this is a great time for a compatible number. What are the multiples of 12?

• $100 

   

• $250

• $200

• $300

Multiple Choice

Use number sense about decimal placement to complete the equation. What are the correct divisors for A, B and C? The choices are 0.12, 1.2 and 12.

$$54.36\ \div\ A\ =\ 45.3$$   $$543.6\ \div B=4,530$$   $$5.436\div C=0.453$$  

• A=12

  B=1.2

  C=0.12

• A=1.2

  B=1.2

  C=12

• A=1.2

  B=12

  C=0.12

• A=1.2

  B=0.12

  C=12

​Explanation

​Number sense requires us to think about math in a different way. It can make more sense to think about these types of questions using at least 1 number that is familiar to us, like 1, 10 or multiples of ten.

​

Multiple Choice

Use number sense about decimal placement to complete the equation. What are the correct divisors for A, B and C? The choices are 0.12, 1.2 and 12.

$$54.36\ \div\ A\ =\ 45.3$$   $$543.6\ \div B=4,530$$   $$5.436\div C=0.453$$  

• A=12

  B=1.2

  C=0.12

• A=1.2

  B=1.2

  C=12

• A=1.2

  B=12

  C=0.12

• A=1.2

  B=0.12

  C=12

Multiple Choice

Find the better deal! Julianne can buy 9.25 ounces of Doritos for $3.33, or she can buy 15.5 ounces for $4.65. Which of the following explains which is a better deal? Hint* You need to find the price per ounce, by dividing, for each size and compare the answers.

• The smaller bag is the better deal, because it costs $0.04 less per ounce than the larger bag.

• The smaller bag is the better deal, because it costs $0.06 less per ounce than the larger bag.

• The larger bag is the better deal, because it costs $0.04 less per ounce than the smaller bag.

• The larger bag is the better deal, because it costs $0.06 less per ounce than the smaller bag.

​Explanation

​Find the better deal! Julianne can buy 9.25 ounces of Doritos for $3.33, or she can buy 15.5 ounces for $4.65. Which of the following explains which is a better deal? Hint* You need to find the price per ounce, by dividing, for each size and compare the answers.

Multiple Choice

Find the better deal! Julianne can buy 9.25 ounces of Doritos for $3.33, or she can buy 15.5 ounces for $4.65. Which of the following explains which is a better deal? Hint* You need to find the price per ounce, by dividing, for each size and compare the answers.

• The smaller bag is the better deal, because it costs $0.04 less per ounce than the larger bag.

• The smaller bag is the better deal, because it costs $0.06 less per ounce than the larger bag.

• The larger bag is the better deal, because it costs $0.04 less per ounce than the smaller bag.

• The larger bag is the better deal, because it costs $0.06 less per ounce than the smaller bag.