Fractions and Decimal Operations!!!!!!!

Adding/Subtracting Fractions

100

5/13 + 3/13

8/13

200

7/2 - 6/2

1/2

300

3/4 + 1/6

9/12 + 2/12 = 11/12

400

7/8 - 2/5

35/40 - 16/40 = 19/40

500

1/3 + 1/2 + 1/8

8/24 + 12/24 + 3/24 = 23/24

Multiplying/Dividing Fractions

100

3/8 x 7/9

21/72

200

9/8 ÷ 4/5

9/8 x 5/4 = 45/32

300

3/4 x 3 1/2

3/4 x 7/2 = 21/8 = 2 5/8

400

1 2/3 ÷ 1/5

5/3 x 5/1 = 25/3 = 8 1/3

500

1 2/3 ÷ 2 3/5

5/3 x 13/5 = 65/15 = 13/3 = 4 1/3

Adding/Subtracting Decimals

100

14.1 + 33.9

48

200

135.37 - 28.17

107.2

300

75.053 + 27.96

103.013

400

14.28 - 6.93

7.35

500

2.005 - 1.987

0.018

Multiplying/Dividing Decimals

100

1.45 x 3.1

4.495

200

3.6 ÷ 0.4

9

300

.34 x 12.5

4.25

400

0.48 ÷ 0.006

80

500

4.55 x 0.13

0.5915

LCM and GCF

100

What is the LCM(4, 6)?

LCM(4,6)=12

200

What is the GCF(24, 40)

GCF (24, 40) = 8

300

What is the LCM(13,39) ?

LCM (13,39) = 39

400

What is the GCF(36, 60)

GCF(36, 60) = 12

500

To simplify fractions do we use the GCF or the LCM?

GCF