Math test english 1 pptx

2. 9 + (6 + 2 × 4) − 32

9 + (6 + 8) − 32

9 + 14 − 9

23 − 9

14

FRACTIONS

Addition of Fractions

To add fractions, they must have a common denominator. The common denominator is a common multi￾ple of the denominators. Usually, the least common multiple is used.

Example

1

3

+

2

7

The least common denominator for 3 and 7 is 21.

(

1

3

×

7

7

) + (

2

7

×

3

3

) Multiply the numerator and denominator of each fraction by the same

number so that the denominator of each fraction is 21.

2

2

1

+ 2

6

1

= 2

8

1

Add the numerators and keep the denominators the same. Simplify the

answer if necessary.

Subtraction of Fractions

Use the same method for multiplying fractions, except subtract the numerators.

Multiplication of Fractions

Multiply numerators and multiply denominators. Simplify the answer if necessary.

Example

3

4

×

1

5

= 2

3

0

Division of Fractions

Take the reciprocal of (flip) the second fraction and multiply.

1

3

÷

3

4

=

1

3

×

4

3

=

4

9

–ACT MATH TEST PRACTICE–

144