Margaret Matchett
7th Grade Math (on level)
Week 8
Multiplication and Division of Fractions
Warm-up – Day 1
How many dollars do you have if you have 20 quarters?
Write a numeric expression that shows the value of 20 quarters in dollars:
How many dollars do you have if you have 30 dimes?
Write a numeric expression that shows the value of 30 dimes in dollars:
28 April 2009
Margaret Matchett
7th Grade Math (on level)
Week 8
Multiplication and Division of Fractions
28 April 2009
Day 1 – Transparency
1
1
2
+
3
4
1
5
6
+
7
8
1
9
10
+
11
12
1
13
14
15
+
16
17
1 =5
18
19
20
Margaret Matchett
7th Grade Math (on level)
Week 8
Multiplication and Division of Fractions
Day 1 - Transparency
1
1
28 April 2009
Margaret Matchett
7th Grade Math (on level)
Week 8
Multiplication and Division of Fractions
28 April 2009
Transparency – Day 1
1)
2)
3)
4)
5)
6)
7)
8)
9)
IN CLASS/HOMEWORK WORKSHEET – TBD, but the student must:
o
o
o
o
o
Identify factors and products in an equation
Model fraction multiplication
Practice fraction with integer multiplication
Practice fraction with fraction multiplication
2 – 3 fraction story problems
Margaret Matchett
7th Grade Math (on level)
Week 8
Multiplication and Division of Fractions
28 April 2009
VOCABULARY – DAY 1
Definition:
In my own words/characteristics:
Factors
Example or List:
Non-Example:
Definition:
In my own words/characteristics:
Product
Example or List:
Non-Example:
Margaret Matchett
7th Grade Math (on level)
Week 8
Multiplication and Division of Fractions
28 April 2009
Warm Up – Day 2
Did you know that
of Americans over age 18 do not understand fractions?
(That is supposed to be a joke – why does that statement not make sense?)
So, here is the REAL warm-up:
My chocolate chip cookie recipe calls for
recipe makes
cups of semi-sweet chocolate chips. This
dozen cookies.
1) If I want to make 3 batches of cookies, how many cups of chocolate chips will I need?
2) If I make 3 batches of cookies, how many cookies will I have?
3) If I have 5 classes with 20 students in each class, will I have made enough cookies for
every student to have one?
Margaret Matchett
7th Grade Math (on level)
Week 8
Multiplication and Division of Fractions
Warm up - Day 3
One quarter = $0.25. How much money do you have if you have 20 quarters?
Write a numeric expression that shows the value of 20 quarters in dollars:
One dime = $0.10. How many dollars do you have if you have 30 dimes?
Write a numeric expression that shows the value of 30 dimes in dollars:
28 April 2009
Margaret Matchett
7th Grade Math (on level)
Week 8
Multiplication and Division of Fractions
28 April 2009
Day 3 - Transparency
×
0.4
×
=
0.7
=
0.28
To multiply decimals:





Multiply the numbers as if there were no decimal:
Count the number of places to the right of the decimal in the first number: 0.4 => 1 place
Count the number of places to the right of the decimal in the second number: 0.7 => 1 place
Add the two counts: 1+1=2
Move the decimal place the total count from the right to the left: 28 = 28.0 => .280 = 0.280 = 0.28
Practice:
×
=
Margaret Matchett
7th Grade Math (on level)
Week 8
Multiplication and Division of Fractions
28 April 2009
Transparency – Day 3 – Mulitplication with decimals practice
1)
0.65
4
2)
1.25
× 2.45
5)
×
4)
×
-0.65
4
3)
-1.25
× 2.45
6)
×
-0.65
-4
-1.25
× -2.45
In Class worksheet – TBD – But must include the following:




Model decimal multiplication
Practice decimal with integer multiplication
Practice decimal with decimal multiplication
2 – 3 story/TAKS problems
Margaret Matchett
7th Grade Math (on level)
Week 8
Multiplication and Division of Fractions
28 April 2009
Warm up - Day 3
You have some change in your pocket – 2 quarters, 1 dime, 1 nickel, and 4 pennies. How
many pennies or cents is this equivalent to?
How about 3 quarters, 2 dimes, 1 nickel, 11 pennies – show your work --
Worksheet Day 3 - TBD





Convert from fractions to decimals to percents
Convert from percents to decimals
Convert from percents to fractions
Order fractions, percents and decimals from least to greatest, greatest to least
2 – 3 story problems
Margaret Matchett
7th Grade Math (on level)
Week 8
Multiplication and Division of Fractions
28 April 2009
VOCABULARY – DAY 3
Definition:
In my own words/characteristics:
Percent
Example or List:
Non-Example:
In my own words/characteristics:
Definition:
%
Example or List:
Non-Example:
Margaret Matchett
7th Grade Math (on level)
Week 8
Multiplication and Division of Fractions
DAYS 4 & 5 – PROJECT PACKETS
Music in 4-4 time
Fractions in everyday life Recipe packet
Quilt square designer fractions packet
How much do I make salary packet
Math Jeopardy packet
28 April 2009