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Unit 3 Operations With Positive Fractions and Decimals

Unit 3/5 Fraction/Decimal Operations with Ratios and Rates

Everyone must go to the grocery store to buy food and supplies that keep our families healthy.  Each family has a budget that they must stay within when shopping for these items. 

Your group is planning a dinner for a few families of our community. 

Your Math Challenge for this project is to find the ingredients needed at three different markets and compare the cost.  We need to find the best deals so that we can create affordable meals to serve in a formal setting.  We have a very strict budget and cannot spend more than allowed.  


6.3 D, E-Multiply and Divide fluently  

6.2D-Order numbers

6.4G-Generate real world problems 


*Please round to the nearest tenths. 

Time frame:

15 minutes to discuss what you are going to prepare/look through grocery store advertisements and circle what you will need/discuss your reasoning.

10 minutes to cut and glue.

20 minutes to complete and discuss calculations.

20 Share with the class. 

(6.2E) We will extend representations for division to include fraction notation such as a/b represents the same number as a ÷ b where b ≠ 0.

(6.3A) We will recognize that dividing by a rational number and multiplying by its reciprocal result in equivalent values.

(6.3B) We will determine, with and without computation, whether a quantity is increased or decreased when multiplied by a fraction, including values greater than or less than one.

(6.3E) We will multiply and divide positive rational numbers fluently.

Review Resources

Dividing Decimals 'Swoop'

Dividing Decimals - 'Long Division Style'

Long division help

Forms of Fractions

Multiplying Fractions

Dividing Fractions

Adding and Subtracting Fractions.

Subtracting mixed numbers with regrouping