Decimals and Fractions

Rules

100

When adding/subtracting fractions, do you need common denominators?

Yes

200

When adding decimals, what's the most important step when sloving?

Line up the decimals.

300

When subtracting decimals, is it important to write the larger number one top?

Yes

400

When adding/subtracting fractions, do we need to convert mixed numbers to improper fractions?

Yes.

500

When adding and subtracting decimals, what should one do after solving the problem?

Simplify

Fractions 1

100

Add 1/2 + 3/4  as a mixed number or improper fraction

5/4 or  1 1/4

200

Add 1/2 + 1/4 

3/4

300

Subtract 7/10 - 1/5

1/2

400

Subtract 2 1/8 - 1 1/4  

7/8

500

Add 1/3 + 2/6 + 3/5 

19/15 or 1 4/15

Decimals 1

100

Add the decimals: 1.46 + 1.21

2.67

200

Add the decimals: 1.5 + 2.03 + 0.6

4.13

300

Subtract 4.52 - 2.001

2.519

400

Add the decimals: 24.6 + 2.01 + 16.98 =

43.59

500

Subtract the decimals: 45.6 - 2.39

43.21

Fractions 2

100

Subtract the fractions 6/12 - 4/12 in simplest form

1/6

200

Subtract  5/6 - 5/8 

5/24

300

Add the fractions 2 3/5 + 3 1/2 in simplest form as a mixed number

6  1/10

400

Subtract the fractions 2 1/8 - 1/4 in simplest form as a mixed number

1 7/8

500

Add 1 1/2 + 3 

5 3/8   or 4 11/8

Decimals 2

100

Subtract 5.2 - 3.52

1.68

200

Add 198.306 +  2.21 + 51.71 + 5.8 =

258.026

300

Subtract 6.21 - 0.3 -1.67= 

4.24

400

Add 3.25 + 1.2

4.45

500

Find 32 - 8.26 + 2.1

25.84