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Do you remember the method of multiplication that we know?. 1. Karate chop – breaking apart. 7 x 28. (7 x 20) + (7 x 8) = _________. 140. 56. 196. 324 x 6. (300 x 6 ) + (20 x 6) + (4 x 6) =_________. 120. 1800. 24. 1,944.
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Do you remember the method of multiplication that we know? 1. Karate chop – breaking apart
7 x 28 (7 x 20) + (7 x 8) = _________ 140 56 196
324 x 6 (300 x 6) + (20 x 6) + (4 x 6) =_________ 120 1800 24 1,944
Now we will learn standard form! 1. Karate chop – breaking apart 2. Standard Form
7 x 28 28x 7 5 56 14 + 5 196 6
324x 6 324x 6 1 2 24 12 + 2 1944 44 4 18 + 1
Let’s practice Standard Form 186x 9 15x 6 3 79x 3 30 6 + 3 = 9 0 9
Let’s practice Standard Form 79x 3 2 27 21 + 2 = 23 23 7
Let’s practice Standard Form 186x 9 5 7 54 72 + 5 = 77 + 7 = 16 4 7 9 16
We will learn a 3rd method today! 1. Karate chop – breaking apart 2. Standard Form 3. Partial Products
7 x 28 28x 7 56
7 x 28 (7 x 8) + (7 x 20) = _________ 28x 7 20 x 7= 140 56
7 x 28 28x 7 +____ 56 140 1 9 6
324x 6 324x 6 4 x 6 = 24 24 20 x 6 = 120 +______ 120 300 x 6 = 1800 1800 4 1 4 9
Now you try one using partial products. Show your work!!! 5 x 73 OR 5 x 135 365 675
Now you try one more using any method! 4 x 63 OR 8 x 217 252 1736
Now we know 3! 1. Karate chop – breaking apart 2. Standard Form 3. Partial Products
Order them from your favorite to least favorite. Tell your elbow partner your order. Are you the same? 1. Karate chop – breaking apart 2. Standard Form 3. Partial Products