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Partial Products Game Show
L018
CHOOSE YOUR QUESTION
Big Idea Review
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Multiplication Equations
23 x 16 = 268
Product
Factors
Big Idea # 1
Factors in a multiplication equation can be decomposed into addends.
Big Idea # 2
Multi-digit whole numbers can be decomposed into addends based on place value.
Big Idea # 3
Partial products are the products of one factor multiplied by one addend of
the other factor.
Big Idea # 4
The distributive property of multiplication means that a product of two factors is equal to the partial products of the two decomposed addends and the other factor.
Big Idea # 5
When we are multiplying by multiples of 10, 100, or 1,000, we need to make sure we are multiplying the nonzero digits by the multiple of 10, 100, or 1,000 that the number represents.
CHOOSE YOUR QUESTION
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Do Now
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10
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When we are multiplying by multiples of 10, 100, or 1,000 today, we need to make sure we are multiplying the nonzero digits by the multiple of 10, 100, or 1,000 that the number represents.
What is 40 x 80?
3,200
A
B
A
32
32,000
12,000
C
D
5
What is 70 x 20?
14,000
1,400
A
1,400
B
14
140
C
D
I multiplied 7 x 2 which are the nonzero digits with value and got a product of 14.
70 x 20 =
How did you solve
70 x 20 ?
Then, since 70 was a multiple of 10, multiplied 14 x 10 to get 140.
14 x 10 = 140
Then, since 20 was also a multiple of 10, multiplied 140 x 10 to get 1,400.
140 x 10 = 1,400
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When we multiply a single digit by a multiple of 100 or 1,000, we can do the same thing – we can multiply the nonzero digits and then multiply by 100 or 1,000.
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What is the product of 30 x 50?
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800
15
A
B
1,500
150
C
1,500
D
C
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What is the product of 40 x 30?
1,200
70
1,200
B
A
B
120
12,000
D
C
What is the product of 80 x 30?
24
240
A
B
2,400
1,100
2,400
C
D
C
CHOOSE YOUR QUESTION
Guided
Practice
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2 x 2 Multiplication Model
Follow along on page 1
Stop and Jot
Follow along on page 1
Try this example!
(Marble Notebook)
How did you decompose 38 into addends by place value?
54 x 38 =
How did you decompose 54 into addends by place value?
Stop and Jot
Build on to your response on page 1
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Checkpoint!
What are some key things we should remember when multiplying larger numbers?
Decompose the factors that are larger than 10 into its addends.
Multiply each addend by the other factor.
Multiplying by multiples of powers of ten is quick because you can multiply the non-zero digits and then multiply by the value of the place value, i.e. 4 x 300 = 4 x 3 x 100.
CHOOSE YOUR QUESTION
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Independent
Practice
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You will now have 15 minutes to find the product of different 2 by 2 multiplication problems on pages 2-4 of your packet.
You will now have 10 minutes to complete your exit ticket on pages 5 and 6 and then take a picture to submit to your teacher on Google Classroom.
Now wait for your teacher so that you can continue to challenge yourself with Story Problems :)!
Before you go, let's share your prize!
You are always in first place when you've tried your hardest on challenges!