lesson 1 operations with fractions part 1 (notes)

September 16, 2013

On page 8 –I can add, subtract, multiply and divide fractions and mixed numbers

Do Now:How do you feel about working with fractions?

(Do not copy the question. Restate the question in your answer. Make sure you are using complete sentences).

Operations with Fractions 9/16/13

• Operations with Fractions foldable (6-flap foldable)

Step 1 – Stagger three sheet of copy paper

Step 2 – Fold the top of the papers to meet the bottom about an inch.

Step 3 – Crease the fold and staple the top.

Step 4 – Label each flap

Step 5 – Copy the Vocabulary term.

• Proper fractions– fractions whose numerators are less than their

denominators

• Improper fractions– Fractions whose denominators are less than their

numerators

• Mixed numbers– Numbers with whole numbers and a proper fraction

• Reciprocal– A pair of factors whose product is equal to one (1)

VOCABULARY

Mixed Numbers Improper Fractions

• Multiply whole number by denominator

• Add numerator• Denominator keep!

• Divide numerator by denominator

• Use quotient as whole number

• Write remainder as numerator

• Keep denominator

MAD

TIBO

13 x 3 = 39

39 + 9 = 48

€

4813

€

9 44)4

-36 8

€

4 89

Adding & Subtracting

Adding Fractions• Find LCD if denominators are

unlike.• Find equivalent fractions using

the LCD.• Add the numerators. Keep the

denominator.• Add the whole numbers, if

needed.• Simplify.

€

2 56+1 4

5=

LCD = 30

€

2 56=2

30

1 45=1

30

25

24

€

4930

3

€

4 1930