FractionFraction

Subtraction

SimpleSimpleSubtraction

Subtraction• Not to much different from addition.

1) Get a common Denominator

2) Subtract

Mr. Turtle

8

1

8

6

4

38

7

8

7

Try one• ¾ - 2/5

Try one• 3 2/3 – 1 3/8

SubtractionSubtractionWith borrowing

Subtraction• Try 4 2/5 – 2 4/5

What is different about this problem?

Mr. Turtle

Subtraction• Try 4 2/5 – 2 4/5

You have to borrow.

Mr. Turtle

5

42

5

24

Subtraction• More examples

1) Get LCD

2) Borrow only when necessary

3) subtract

Mr. Turtle

6

52

4

37

11

456

Try one• 3 2/3 – 1 7/8

Try another• 15 1/8 – 7 3/4

Subtraction• Two more examples

It helps to remember how things work with whole numbers while learning fractions.

These are like 30 – 7 and 83 - 40

Mr. Turtle

3

78

115

46

ElementsElements

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