Working Wednesday Assignment (Decimal Review)

​MGSE.6.NS.3

​Fluently add, subtract, multiply, and divide multi-digit decimals using the standard algorithm for each operation.

​Learning Targets

​I can explain how standard algorithms for addition, subtraction, multiplication, and division with decimals work.

I can estimate a sum, difference, product, or quotient to determine if a result is reasonable.

I can use a standard algorithm to add, subtract, multiply, and divide multi-digit decimals.

I can determine if the standard algorithm is necessary and/or efficient (i.e. 14.518 - 3.5 can be solved with an algorithm but it is less efficient than using mental mathematics).

Multiple Choice

13.16 + 5.90

• 18.86
• 18.06
• 19.06
• 19.00

Fill in the Blank

38.87 + 521.3

Multiple Choice

7.9-3.47=

• 11.37
• 4.43
• 3.32
• 4.37

Multiple Choice

$$10\ -\ .65\ =$$  

• 10.65

• 8.35

• 9.35

• 9.45

Multiple Choice

Sarai has been working to buy a new pair of shoes. So far, she has earned $33 by babysitting, $49.75 selling her old toys, and $27.50 selling lemonade. If she needs $100 for the new shoes, how much money does she have left over?

• $209.00

• $102.50

• $9.00

• $10.25

Fill in the Blank

During the canned food drive, Mrs. Hudson's homeroom collected 172.3 pounds of food and Mrs. Taylor's collected 134.08 pounds of food. Mr. Bobbit's homeroom collected 400 pounds of food. How many more pounds of food did Mr. Bobbitt's class collect than Mrs. Hudson and Mrs. Taylor's combined?

Divide decimals

• Move any decimal in divisor (outside value) out.

• Move decimal point same number of places.

• Re-write as a whole number and decimal. Bring up decimal, divide and watch place you put digit on top of bar.

Important Remainder Info

**No more remainders!

Multiple Choice

What is the first step to solving this problem?

• Move the decimal straight up

• Divide like normal

• Make the divisor a whole number by moving the decimal

• Take out the decimal

Fill in the Blank

Divide.

$$4.530\ \div1.5$$  

Multiple Choice

Solve:

255.6 ÷ 3

• 852

• 8.52

• 85.2

• 84.3

Multiple Choice

1.8 ÷ 0.2

• 9
• 90
• 0.9
• 0.09

Multiple Choice

Solve.

• 40

• 418.5

• 41.85

• 38.56

Multiple Choice

Solve.

• 118.56

• 1.1856

• 1.1875

• 118.94

Converting fractions to decimals

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Converting Fractions to decimals and percents

​

Fill in the Blank

Write as a decimal:

$$\frac{4}{5}$$  

Fill in the Blank

Write as a decimal:

$$\frac{2}{100}$$  

Multiple Select

Which of the following are equivalent to

$$\frac{1}{2}$$  

• $$0.3$$  

• $$0.5$$  

• 100

• .40

Fill in the Blank

Write $$\frac{8}{20}$$  as a decimal.

Fill in the Blank

Write 0.45 as a fraction.

Multiple Choice

Solve.

• 10

• 9.5

• .95

• 0.095

Fill in the Blank

-10.32 + 4.38

Fill in the Blank

- 16 - 4.243