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1.04
09-22-08
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1. What are like
fractions?
1. They’re fractions with the same denominator
EX: ⅝ ⅞ ⅛
2. What are unlike
fractions?
2. They’re fractions with different denominators
EX: ⅛, , ,½
3. What are proper
fractions?
3. Fractions in which the numerator is less than the
denominator
EX: ½ ⅞ ⅛
4. What are
improper fractions?
4. Fractions in which the numerator is greater than the
denominator
EX:
, ,
5. What are
equivalent fractions?
5. Fractions that have the same value
EX:
6. How do I make an
equivalent fraction?
=
= =
=
6. * Multiply the numerator and denominator by
the same number
EX:
x
=
x
=
OR
* Divide by a number that goes into the numerator
AND denominator evenly
EX:
÷
=
÷
=
7. What does
simplest form mean?
7. The fraction cannot be reduced
* No numbers other than 1 can go into the numerator
and denominator evenly
EX: ⅝ , ⅔ , ⅞
8. How do I change
a whole number into
fraction?
8. Put the whole number over 1
EX: 7=
10=
5=
9. The numerator must be the same as the denominator
9. How do I make a
fraction equal to 1?
EX:
=1
=1
=1
10. What is a mixed
number?
10. A whole number with a fraction
EX: 4⅝ , 7⅔ , 3⅞
11. How do I change
a mixed number into
an improper
fraction?
11. 1. Multiply the whole number and denominator
2. Add the numerator to your answer
3. The sum becomes the numerator
Then add.
4. The denominator stays the same
EX:
4⅝
7⅔
3⅞
2
33
Multiply.
11. How do I change
an improper fraction
into a mixed number?
12. Change the
improper fractions to
mixed numbers:
11.
1
__
24
=
12. 1.
2.
3.
4 9
-8
1
1. Divide the numerator by
the denominator.
2. The remainder becomes the
numerator, the denominator stays
the same.
1.04 Multiply fractions
1. How do I multiply
fractions?
1. A. Multiply the numerators straight across
B. Multiply the denominators straight across
C. Write the answer in simplest form
Example 1:
1/3 * 3/5
Example 2:
4 * 7/8
Example 3:
1/3 * 1 1/2
Example 4:
2 1/2 * 1 1/3
Example 5:
3 * 2 1/8
1.03 Multiply fractions
3. How do I multiply
mixed numbers?
3. A. Change the mixed numbers to improper fractions
4. How do I
evaluate fraction
expressions?
4. A. Replace x with the given number
B. Multiply
B. Multiply
C. Write your answer in simplest form
Example: x = 5/8
1/3 * x
1.03 Multiply fractions
6. How do I multiply a 6.
whole number by a
A. Write both numbers as improper fractions
mixed number?
B. Multiply
C. Change your answer to a mixed number
1.03 Divide fractions
1. What is a
reciprocal?
1. It’s when you flip a fraction upside down
2. How do I find the
reciprocal of a
fraction?
2. Switch the numerator and denominator
Example: 2/5 =
8/9 =
1.04 Divide fractions
3. How do I divide
fractions?
3. 1. Copy the first fraction
2. Change the division sign to multiplication (Dot)
3. Flop (flip) the second fraction
4. Multiply
5. Write your answer in simplest form
Example 1:
4/5 divided by 5/2
Example 2:
1/2 divided by 1/4
1.04 Add & subtract fractions
1. How do I add like
fractions?
1. A. Add the numerators
B. Keep the same denominator
C. Write your answer in simplest form
Example: 2/7 + 3/7
2.How do I subtract
like fractions?
2. A. Subtract the numerators
B. Keep the same denominator
C. Write your answer in simplest form
Example 1: 4/5 - 1/5 =
Example 2: 1- 4/5=
3. How do I subtract
like mixed
numbers?
3. A. Subtract the fractions
B. Subtract the whole numbers
C. Write your answer in simplest form
Example: 2 3/4 - 1 1/4 =
1.03 Add & subtract fractions
4. How do I evaluate
expressions with
fractions?
4. A. Write the expression
B. Replace x with the given number
C. Subtract/Add the numerators
D. Keep the same denominator
E. Write your answer in simplest form
Example 1 : x = 5/8
x - 2/8
Example 2: x = 3/8
x + 1 1/8