Prime Factorization - after video what is the prime factorization of 32 | Place Value / Expanded Form - |
6 Comments
Ha! I love the pun in the begging. This a very good thought out, planned video that teaches expanded form very throughly and clearly. Second graders and first graders will love this, I know I would, and I still do! The expanded form of 3,485.25 is 3,000+400+80+5+0.2+0.05.
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Ha! This was great. The music is popping. This video also taught me something’s that I never knew before, like I never knew that multiplication had expanded form, and I never knew that there was something called exponential form. This video would’ve been great for the math review, ha! I love how his name is Dr.Pie not the mathematical version, Pi. He also encourages the people by saying you got potential.
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Avery
10/6/2019 12:19:42 pm
I really like the prime factorization video because it taught me that you make a multiplication sentence for the number and circle the prime numbers. Then, you keep goin until you reach all prime and then multiply all the circled numbers to get the multiplication expanded form. To get the exponential form, you look to see if any of the numbers are the same and if they are you make them into an exponent. For example the the expanded form of 36 is 3X3X2X2 and the exponential form is 2^2 X 3^2.
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Avery
10/6/2019 12:27:47 pm
The one about expanded forms funny and I think little kids would like it. I know that you just have to think of what place the number is in and then make it that much worth.
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Avery
10/6/2019 12:31:33 pm
The prime factorization for 32 is 2X2X2X2X2 and the exponential form is 2^5.
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Avery
10/6/2019 12:57:13 pm
In the scientific notation video I learned that you take your number(s) that are/is not 0 and express it as an inequality that shows the number is less than 10 but more or greater than 1. Then see how many 0s there is and do 10 to the power of how many 0s there is and multiply it by the inequality to get the answer. For example to solve for the scientific of 450 first you take 45 and make it less than 10 but more than 1. 1≤ 45 ≥ 10. Then, you see there is 1 0 so you do 10^1. Your final product is 1≤ 45 ≥ 10 X 10^1 and if you simplify you get 450.
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