Fraction Review

Adding Fractions

100

What is 10/21 + 5/21 =

15/21 = 3/7 1. Change mixed numbers to improper fractions 2. Find common denominators 3. Add straight across the numerator; keep denominator the same 4. Simplify

200

What is 3/5 +2/6 =

18/30 + 10/30 28/30 = 14/15 1. Change mixed numbers to improper fractions 2. Find common denominators 3. Add straight across the numerator; keep denominator the same 4. Simplify

300

What is 2 1/2 + 4 1/3=

5/2 + 13/3 15/6 + 26/6 = 41/6 or 6 5/6 1. Change mixed numbers to improper fractions 2. Find common denominators 3. Add straight across the numerator; keep denominator the same 4. Simplify

400

What is 3 ¼ + 2 1/5=

13/4 + 11/5 65/20 + 44/20 = 109/20 or 5 9/20 1. Change mixed numbers to improper fractions 2. Find common denominators 3. Add straight across the numerator; keep denominator the same 4. Simplify

500

Dominique has to read 100 pages by Monday. If she reads 3/5 of the book on Friday and 1/6 of the book on Saturday, what fraction of the book has she read so far?

3/5 + 1/6 18/30 + 5/30 = 23/30 1. Change mixed numbers to improper fractions 2. Find common denominators 3. Add straight across the numerator; keep denominator the same 4. Simplify

Subtracting

100

What is 6/11 – 3/11 ?

= 3/11 1. Change mixed numbers to improper fractions 2. Find common denominators 3. Subtract straight across the numerator; keep denominator the same 4. Simplify

200

What is 2/3 – 1/6 ?

4/6 – 1/6 3/6 = 1/2 1. Change mixed numbers to improper fractions 2. Find common denominators 3. Subtract straight across the numerator; keep denominator the same 4. Simplify

300

What is 3 2/3 – 1 ¼ ?

11/3 – 5/4 44/12 – 15/12 = 29/12 or 2 5/12 1. Change mixed numbers to improper fractions 2. Find common denominators 3. Subtract straight across the numerator; keep denominator the same 4. Simplify

400

What is 4 ½ - 1 4/5 ?

9/2 – 9/5 45/10 – 18/10 = 27/10 or 2 7/10 1. Change mixed numbers to improper fractions 2. Find common denominators 3. Subtract straight across the numerator; keep denominator the same 4. Simplify

500

If Tom has 2/3 of his allowance left after buying a new video game, and then he spends another ¼ of his allowance on a new hat. How much of his allowance is left?

2/3 – ¼ 8/12 – 3/12 = 5/12 1. Change mixed numbers to improper fractions 2. Find common denominators 3. Subtract straight across the numerator; keep denominator the same 4. Simplify

Multiplying

100

What is 1/3 x 6/7 ?

6/21 = 2/7 1. Change mixed numbers to improper fractions 2. Multiply straight across the numerator 3. Multiply straight across the denominator 4. Simplify

200

What is 2/7 x 14/20 ?

1/1 x 1/5, or 28/140 = 1/5 1. Change mixed numbers to improper fractions 2. Multiply straight across the numerator 3. Multiply straight across the denominator 4. Simplify

300

What is 2 ¼ x 1 ¾ ?

9/4 x 7/4 = 63/16 or 3 15/16 1. Change mixed numbers to improper fractions 2. Multiply straight across the numerator 3. Multiply straight across the denominator 4. Simplify

400

What is 4 2/4 x 2 2/3 ?

18/4 x 8/3 9/2 x 8/3 3/1 x 4/1 = 12 1. Change mixed numbers to improper fractions 2. Multiply straight across the numerator 3. Multiply straight across the denominator 4. Simplify

500

Mary has run 3/5 of the race. If the race is 13 miles long, how far has Mary run?

3/5 x 13 3/5 x 13/1 = 39/5 or 7 4/5 1. Change mixed numbers to improper fractions 2. Multiply straight across the numerator 3. Multiply straight across the denominator 4. Simplify

Dividing

100

What is 8 ÷ ½ ?

8 x 2 = 16 1. Change mixed numbers to improper fractions 2. KFC: Keep the first fraction as is. Flip the sign to multiplication. Change the second fraction to its inverse/reciprocal (flip it over!) 3. Multiply straight across the numerator 4. Multiply straight across the denominator 5. Simplify

200

What is 2/3 ÷ ¼ ?

2/3 x 4/1 = 8/3 or 2 2/3 1. Change mixed numbers to improper fractions 2. KFC: Keep the first fraction as is. Flip the sign to multiplication. Change the second fraction to its inverse/reciprocal (flip it over!) 3. Multiply straight across the numerator 4. Multiply straight across the denominator 5. Simplify

300

What is 3 1/3 ÷ 2/5 ?

10/3 ÷ 2/5 10/3 x 5/2 50/6 = 25/3 or 8 1/3 1. Change mixed numbers to improper fractions 2. KFC: Keep the first fraction as is. Flip the sign to multiplication. Change the second fraction to its inverse/reciprocal (flip it over!) 3. Multiply straight across the numerator 4. Multiply straight across the denominator 5. Simplify

400

What is 6 3/7 ÷ 1 2/3 ?

45/7 ÷ 5/3 45/7 x 3/5 9/7 x 3/1 = 27/7 or 3 6/7 1. Change mixed numbers to improper fractions 2. KFC: Keep the first fraction as is. Flip the sign to multiplication. Change the second fraction to its inverse/reciprocal (flip it over!) 3. Multiply straight across the numerator 4. Multiply straight across the denominator 5. Simplify

500

If John has ¾ of a pie leftover and he divides it evenly among himself and two friends, what fraction of the remaining pizza will each person receive?

¾ ÷ 3 ¾ x 1/3 3/12 = 1/4 1. Change mixed numbers to improper fractions 2. KFC: Keep the first fraction as is. Flip the sign to multiplication. Change the second fraction to its inverse/reciprocal (flip it over!) 3. Multiply straight across the numerator 4. Multiply straight across the denominator 5. Simplify

Random

100

What is .3 X 1/2

15/100 or 3/20 or .15

200

Convert 3/7 to a decimal.

.4285

300

Conver 4 2/3 into an improper fraction.  

14/3

400

Solve for n. 6/7 times n = 1 What does n equal?

6/7 x 7/6 = 1 n = 7/6 or 1 1/6

1.Change mixed numbers to improper fractions 2.Multiply any # by its reciprocal to get a product of 1

500

Who had the longest presidency?

A. Henry Ford

B. Ben Franklyn 

C. Albert Einstein 

D. Thomas Eddison 

None of these people have been president.