Math 9

Learn Math Part 9

100

Review: 5/8x5

5x5/8x1=25/8

200

example: 2/5-4/5

1. remember the negative topic from Math 4

2. 2/5-2/5=0 0-2/5=-2/5

1/3-2/3

-1/3

300

Example: 3 2/3 x 4 1/5

1. convert to fraction 4 1/5=21/5 3 2/3=11/3

2. multiply 21/5x11/3=21x11/5x3=231/15 or 15 2/5

1 4/10 x 2 4/5

14/10x14/5=14x14/10x5=196/50

400

Example: 1.5

1.it has 0.5 that 1/2 the answer could be 1 1/2 or 3/2

0.3

3/10

500

Example: 65%

1. divide 65/100=0.65

2. put it in fraction 65/100

75%

75/100

negative Fractions

100

3/5-4/5

-1/5

200

4/10-7/10

-3/10

300

5/12-9/12

-4/12

400

1/2-1

-1/2

500

25/50-75/50

-1 or -50/50

Multiply Fractions Advanced

100

1 3/10 x 2 4/5

13/10x14/5=13x14/10x5=182/50

200

1 5/6 x 3/4

11/6x3/4=11x3/6x4=33/24

300

3 2/5 x 3/10

17/5x3/10=17x3/5x10=51/50

400

3 4/5 x 2 2/5

19/5x12/5=19x12/5x5=228/25

500

3 3/5 x 2 4/6

18/5x16/6=18x16/5x6=288/30

Decimal to Fraction

100

0.5

1/2

200

0.65

65/100

300

1.6

1 6/10

400

.9

9/10

500

0.9876

9876/10000

Percent to Fraction

100

85%

85/100

200

25%

25/100 or 1/4

300

35%

35/100

400

132%

132/100

500

9876%

9876/100