Add/Subtract/Multiply/Divide Decimals and Fractions

Vocabulary

100

what is something you have to make sure line up when add/subtracting decimals. (you need to get the right change)

Place Value

200

What is it called when the Numerator and Denominator flip

Reciprocal

300

What would 1/2 be called if you had the problem answer 5/10

simplified fraction

400

Explain how you would multiply this problem

1.7 x 2.89

Using vocab

Move decimal 3 times total

Area model 17 and 289

Add up partial products with place value

move decimal back 3 times

500

Explain how you would solve this using vocabulary 

3 1/5 divided by 1 2/6

turn the mixed numbers into fractions greater than 1 by multiply denominator, add numerator

find reciprocal of divisor

multiply numerator and denominator

simplify 

Add subtract decimals

100

12.69 - 8.99

3.7

200

17.20 + 7.57 + 3.1

27.87

300

9.21 - 0.022

9.188

400

8.99 + 2.01 + 0.03 + 5

16.03

500

Mia goes to the store with $20.00. She buys a notebook for $4.35 and a pen for $1.65 How much money does Mia have left?

14

Multiply fractions

100

1/6 x 2/5

2/30 

or

1/15

200

5/10 x 3/7

15/70

or

3/14

300

2 1/2 x 5 3/4

115/8

400

1 3/4 x 8 2/3

182 / 12

500

Ling owns 5/8 of an acre of farmland. She grows beets on 1/2 of that land. On how many acres of land does Ling grow beets?

5/16

Divide fractions

100

8/10 divide 3/4

32 / 30

or 

16/15

200

4/5 divide 2/4

16 / 10

or

8/5

300

2 1/3 divide 1 1/2

21 / 6

or

3 3/6

400

4 2/5 divide 1 4/5

198/10

or 

19 8/10

500

Mia has  3/4 of a cup of trail mix. She puts 1/8 of a cup into small snack bags. How many snack bags can she fill?

24 / 4

or

6

multiply/divide decimals

100

1.2 x 5.7

6.84

200

1.21 divide .11

11

300

2.7 x 3.21

8.667

400

9.5 divide .5

19

500

Each piano lesson costs $18.50. Terrence has 4 lessons next month. How much will he pay?

4.625

or

4.63