Adding Decimals
Subtracting Decimals
Like Denominators
Unlike Denominators
Vocabulary
100

0.2 + 0.6 

0.8

100

0.9 - 0.3=

0.6

100

What is the next step after you notice the denominators are the same?

Carry the denominator over to the answer.

100

What do we find after noticing the denominators are different?

We find the LCM first.

100

What is a mixed number?

A whole number and a fraction

A whole and part of a whole

200

1.065 + 0.39

1.455

200

2.635 - 1.241 =

1.394

200

2/6 + 5/6 = 

1  1/6

200

1/4 + 2/5 =

13/20

200

What does the word "like" mean in "like denominators"

Like means the same 

300

20.3 + 10.562

30.862

300

362.054 - 164.003 = 

198.051

300

1  2/5  + 3/5 =

2

300

4/5 - 1/3 = 

7/15

300

What does the word decimal mean?

A point that separates the whole numbers from the part of a whole numbers

400

126.397 + 385.004 =

511.401

400

1,036.102 - 635.09 = 

401.012

400

2  7/8 -  1 2/8 =

1  5/8

400

1  2/4  +  3/8 = 

1  7/8

400

What does "unlike" mean in the phrase unlike denominators?

Unlike means the denominators are different
500

1,035.985 + 478.958 =

1,514.943

500

2,003.005 - 1,158.326 =

844.679

500

2  3/6  - 5/6 = 

1  4/6

500

3  2/7  -  6/9 = 

2  39/63

500

What is the difference between a decimal number and a fraction? 

Nothing; they are the same

Decimal numbers can have a whole number where fraction numbers are just parts of a whole

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