Fraction Operations Review

Fraction Operations Review

By LK Stewart

ADDING FRACTIONS

It's not that bad. :)

If the denominators are the same, you're good to go.​

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Adding Fractions

​Some text here about the topic of discussion.

REMEMBER TO SIMPLIFY!

Multiple Choice

$$\frac{2}{9}+\frac{5}{9}$$  

• $$\frac{7}{18}$$  

• $$\frac{7}{9}$$  

• $$\frac{10}{18}$$  

• $$\frac{10}{9}$$  

What if they have different denominators?

Find a common factor and multiply to get equal denominators.

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*If you're not sure, multiply the bottom and top by the opposite denominator!

Multiple Choice

$$\frac{3}{4}+\frac{1}{6}$$  

• $$\frac{4}{10}$$  

• $$\frac{2}{5}$$  

• $$\frac{11}{12}$$  

• $$\frac{7}{12}$$  

Multiple Choice

$$\frac{1}{12}+\frac{5}{6}$$  

• $$\frac{1}{3}$$  

• $$\frac{5}{12}$$  

• $$\frac{6}{18}$$  

• $$\frac{11}{12}$$  

If the denominators are the same, you're good to go.​

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Subtracting Fractions

Multiple Choice

$$\frac{19}{20}-\frac{12}{20}$$  

• $$\frac{6}{20}$$  

• $$\frac{7}{0}$$  

• $$\frac{0}{20}$$  

• $$\frac{7}{20}$$  

What if they have different denominators?

Find a common factor and multiply to get equal denominators.

​

*If you're not sure, multiply the bottom and top by the opposite denominator!

Multiple Choice

$$\frac{8}{9}-\frac{2}{3}$$  

• $$\frac{6}{6}$$  

• $$\frac{6}{9}$$  

• $$\frac{2}{9}$$  

• $$\frac{4}{9}$$  

Multiple Choice

$$\frac{11}{15}-\frac{2}{5}$$  

• $$\frac{3}{5}$$  

• $$\frac{9}{10}$$  

• $$\frac{5}{10}$$  

• $$\frac{1}{3}$$  

INTEGER RULES: They're still a thing.

ADDITION:

Same sign: add and keep

Different signs: subtract​

SUBTRACTION:

Rewrite as addition using LCO

Multiple Choice

Calculate $$-\frac{2}{5}+\left(-\frac{1}{5}\right)$$  

• $$-\frac{3}{5\ }$$  

• $$-\frac{1}{5\ }$$  

• $$\frac{1}{5\ }$$  

• $$\frac{3}{5\ }$$  

Multiple Choice

Calculate $$\frac{2}{3}-\left(-\frac{4}{3}\right)$$  

• $$-\frac{2}{3}$$  

• -2

• 2

• 3

Multiple Choice

Calculate $$-\frac{3}{5\ }+\left(-\frac{1}{3}\right)$$  

• $$-\frac{4}{15}$$  

• $$\frac{14}{15}$$  

• $$-\frac{14}{15}$$  

• $$-\frac{3}{8}$$  

Multiply straight across and simplify.

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Multiplying

Fractions

Multiple Choice

Calculate $$-\frac{3}{5\ }\times\left(-\frac{1}{3}\right)$$  

• $$\frac{3}{15}$$  

• $$-\frac{3}{15}$$  

• $$-\frac{1}{5}$$  

• $$\frac{1}{5}$$  

Multiple Choice

Calculate $$\frac{7}{8}\times\frac{11}{14}$$  

• $$\frac{11}{16}$$  

• $$\frac{77}{112}$$  

•   $$\frac{88}{98}$$

• $$\frac{9}{17}$$

Keep Change Flip

Multiply

Simplify

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Dividing

Fractions

Multiple Choice

Calculate $$\frac{3}{4}\div\frac{2}{5}$$  

•   $$1\ \frac{7}{8}$$

• $$\frac{6}{20}$$  

• $$\frac{3}{8}$$

• $$\frac{8}{15}$$

Multiple Choice

Calculate $$\frac{\frac{8}{9}}{-\frac{1}{2}}$$  

• $$-1\ \frac{7}{9}$$

• $$-\frac{7}{9}$$

• $$-\frac{4}{9}$$

• $$-\frac{9}{16}$$