algebraic fractions

22
Adding with Common Denominators Adding with Different Denominators Multiplying Dividing Fractions

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Examples and explanation of adding fractions with a common denominator, different denominators, multiplying fractions and dividing fractions.

TRANSCRIPT

Page 1: Algebraic fractions

• Adding with Common Denominators

• Adding with Different Denominators

• Multiplying

• Dividing

Fractions

Page 2: Algebraic fractions

𝑦6

+2 𝑦6

=¿

If the base (denominator) is the same…

Add straight across the top (numerators)

Add/Subtract Common Denominators

Page 3: Algebraic fractions

3 𝑦6

=¿

Can it be simplified?

Page 4: Algebraic fractions

3÷ 3 𝑦6÷3

=¿

3

Page 5: Algebraic fractions

=

Add the numerators

Simplify

Page 6: Algebraic fractions
Page 7: Algebraic fractions

𝑦6

+2 𝑦5

=¿

Make the bases the same

(choose a common denominator)

Add/Subtract Different Denominators

Page 8: Algebraic fractions

Multiply top & bottom by the SAME number.

(changes the look not the fraction)

30

Page 9: Algebraic fractions

5 𝑦30

+12 𝑦30

=¿

Now the base (denominator) is the same…

Add straight across the top (numerators).

Page 10: Algebraic fractions

17 𝑦30

=¿

Can it be simplified?

Page 11: Algebraic fractions

=

Make denominators the same

Simplify if you can!

Multiply top and bottom by same number

Add the numerators

Page 12: Algebraic fractions
Page 13: Algebraic fractions

𝑦2×43 𝑥

=¿

Multiply straight across the top (numerators)

Multiply

Multiply straight across the bottom

(denominators)

Page 14: Algebraic fractions

4 𝑦6𝑥

=¿

Can it be simplified?

Page 15: Algebraic fractions

4÷ 2𝑦6÷ 2𝑥

=¿

2

Page 16: Algebraic fractions

=

Multiply numerators,

multiply denominators

Simplify

Page 17: Algebraic fractions
Page 18: Algebraic fractions

𝑦2÷43 𝑥

=¿

Divide

Flip the second fraction upside down

(invert)

Page 19: Algebraic fractions

𝑦2×3 𝑥4

=¿

Multiply straight across the top (numerators)

Multiply straight across the bottom

(denominators)

Page 20: Algebraic fractions

3𝑥𝑦8

=¿

Can it be simplified?

Page 21: Algebraic fractions

=

Flip the second fraction

Simplify if you can!

Multiply numerators,

multiply denominators

Page 22: Algebraic fractions