Transcript Multiplication

Multiplication
How can decomposing factor assist me
when solving multiplication problems?
Understanding the EQ
breaking down
numbers in a
multiplication
problem
help
How can decomposing factors assist me
when solving multiplication problems?
How can breaking down number in a
multiplication problem help me when
solving multiplication problems?
I Do Decomposing Factors
3x4
8x6
We Do Decomposing Factors
9x8
24 x 3
Brain Break
You Do Decomposing
47 x 18
32 x 6
13 x 9
Multiplication
How can decomposing factors assist me when
solving multiplication problems?
APK
What are factors?
What does it mean to
decompose?
What operation do we use when
decomposing factors?
What other multiplication
strategies do we have?
I Do Decomposing
124 x 33
1.
2.
3.
4.
5.
Tips:
Look at the problem.
Decompose using
addition
Create multiplication
problems using
decomposed numbers
Find the product
Add the products
We Do Decomposing
210 x 15
1.
2.
3.
4.
5.
Tips:
Look at the problem.
Decompose using
addition
Create multiplication
problems using
decomposed numbers
Find the product
Add the products
You Do Decomposing
87 x 15
100 x 45
76 x 92
Table 1: Use Lattice
Table 2: Use Algorithm
Table 3:Use Partitioning
Table 4: Use Decomposing
151 x 17
Which method is the most efficient?
Why?
Challenge!
How can decomposing the
dividend assist me when
dividing?
Division
Understanding the EQ
breaking down
number being
divided
help
How can decomposing the dividend assist
me when dividing?
How can breaking down number being
divided help me when dividing?
I Do Decomposing Dividend
42 ÷ 3
56 ÷ 5
I Do Decomposing Dividend
42 ÷ 3
1.
2.
3.
4.
56 ÷ 5
5.
6.
Tips:
Look at the problem.
Ask yourself what is the
biggest multiple of the
divisor I can use without
going over the dividend.
Subtract that number from
the dividend and put
answer to the division
problem to the side
Do step 2 with the solution
to the subtraction problem
Repeat step 3.
Continue until you find your
solution.
We Do Decomposing Dividend
92 ÷ 4
1.
2.
3.
4.
89 ÷ 7
5.
6.
Tips:
Look at the problem.
Ask yourself what is the
biggest multiple of the
divisor I can use without
going over the dividend.
Subtract that number from
the dividend and put
answer to the division
problem to the side
Do step 2 with the solution
to the subtraction problem
Repeat step 3.
Continue until you find your
solution.
You Do Decomposing Dividend
126 ÷ 4
1.
2.
3.
4.
105 ÷ 70
5.
6.
Tips:
Look at the problem.
Ask yourself what is the
biggest multiple of the
divisor I can use without
going over the dividend.
Subtract that number from
the dividend and put
answer to the division
problem to the side
Do step 2 with the solution
to the subtraction problem
Repeat step 3.
Continue until you find your
solution.
Go to Stations
Ms. Williams
Application
Computers
Problem
Solving
Rotation 1
Table 1
Table 2
Table 3
Table 4
Rotation 2
Table 4
Table 1
Table 2
Table 3
Rotation 3
Table 3
Table 4
Table 1
Table 2
Rotation 4
Table 2
Table 3
Table 4
Table 1
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