Transcript In your Math Journals, answer these review problems

In your Math Journals, answer these
review problems
•
Write in simplest form:
•
1.
2.
3.
4.
5.
3/9
4/12
5/15
6/36
4/20
Add or Subtract and put in
simplest form:
6.
7.
8.
9.
2/7 + 3/7
4/8 + 2/8
5/9 + 2/9
6/12 + 3/12
Mixed Numbers
By Mr. Bales
Objective
• By the end of this lesson, you will be able to
write mixed numbers and improper fractions.
• Standard 3 NS3.2 - Students will add and
subtract simple fractions…
Get Ready to Learn
• Noah is selling
pies at a bake
sale. Each pie
has 5 slices. Each
slice is sold
separately. There
are 7 slices left.
What fraction of
the pies is left?
Quic kTime™ and a
TIFF (Unc ompres sed) decompress or
are needed to see this picture.
Mixed Number vs. Improper Fraction
• A mixed number has a whole number part
and a fraction part.
• An improper fraction has a numerator that is
greater than its denominator.
Mixed Numbers
11 23 55
2
4
6
Improper Fractions
3 11 23
2
4
6
Teach
• Draw two pizzas on your whiteboard with 5 pieces in
each pizza.
• Noah has 7 pieces left. So, color in 7 pieces total
using both of the pizzas.
• Simply count the wholes and the parts.
• You should have 1 whole pizza colored in, plus 2
pieces of the other
• Answer: 1 2 pizza left over
5
Mixed Number to Improper
Fraction
• Write 1 3 as an improper fraction.
8
1 3=1+3
8
8
Write the mixed number as the
sum of a whole and part
=8+3
8 8
= 11
8
Write the whole number as a fraction
and then, add.
Changing a Mixed Number
into an Improper Fraction
• Sometimes, you will be
asked to or be forced
to make a mixed number
an improper fraction.
• Here’s how you do it:
• First, breathe!!
• Second, you will multiply
the whole number by the
denominator.
• 2 3
4
2*4=8
Next, you add the
numerator to what you
just multiplied.
8 + 3 = 11
Last, you put that new
number over the same
denominator from the mixed
number
11
4
Improper Fraction to a Mixed
Number
• An improper fraction is
a fraction where the
numerator is larger than
the denominator.
• Example:
• 14
3
• To turn an improper
fraction to a mixed
number, you:
• Simply divide the
denominator by the
numerator. This will
give you a whole
number.
• Then, you subtract the
numerator by having
you have left over from
the division.
• Last, put this fraction
over the same
denominator in the
improper fraction.
Bales Bucks!!
• Change improper fraction •
to mixed number.
•
•
•
•
•
•
17/5
65/11
72/7
86/9
44/6
•
•
•
Change mixed number
into improper fraction.
2 5
6
4 7
9
5 6
11
8 4
7
Tim and Moby?
Assignment
• Page 540-541 - #’s 12 - 24
• Get them all correct, No Math Homework