math lesson from August 20.notebook1
Standard: 5.NBT.B.5 Fluently multiply multi-digit whole numbers using the standard algorithm.
EQ: What strategies can I use to multiply multi-digit whole numbers?
Miss Hughes ordered pizza for her class. She has 27 students and she wants each student to have 3 pieces of pizza. How many pieces of pizza does she need?
How can we solve this problem using the standard algorithm?
Is there another way we can solve the problem?
math lesson from August 20.notebook
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Click here for a quick video activator!
How can we use partial products to multiply multi-digit numbers by one digit numbers?
math lesson from August 20.notebook
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August 20, 2015
When using the Partial Products algorithm it helps to first think of the numbers in expanded form.
Look at the problem below.
534 x 5
Click below to see the largest factor in expanded form.
500 + 30 +4 x 5
math lesson from August 20.notebook
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August 20, 2015
Partial Products means breaking a number into parts and multiplying each part by the other factor! This is an example of the distributive property!
534 x 5
500 + 30 +4 x 5
Now we are ready to multiply each part by 5. Click below the expanded problem to see each "part" revealed.
= 2500 = (500 x 5) 150 = ( 30 x 5) 20 = ( 4 x 5)
math lesson from August 20.notebook
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ready to put the parts back together by adding!
2500 = (500 x 5) 150 = ( 30 x 5) 20 = ( 4 x 5)+
Let's try some together!
6
August 20, 2015
39 x 4
Step 1-Break the largest factor into expanded form. Step 2-Multiply each part by the smallest factor. Step 3-Add the partial products together.
Use your white board to work these with me.
math lesson from August 20.notebook
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August 20, 2015
537 x 9
Step 1-Break the largest factor into expanded form. Step 2-Multiply each part by the smallest factor. Step 3-Add the partial products together.
Use your white board to work these with me.
math lesson from August 20.notebook
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August 20, 2015
4738 x 6
Step 1-Break the largest factor into expanded form. Step 2-Multiply each part by the smallest factor. Step 3-Add the partial products together.
Use your white board to work these with me.
math lesson from August 20.notebook
9
August 20, 2015
How can we use partial products to multiply multi-digit numbers by one digit numbers?
Think, Pair, Share
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