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Multiplication Using Arrays
How many paper clips are here? I could count them, but there is an easier way!
Now, how many paper clips are here? I can count them by groups. 4 paper clips in each column 3 columns. That is 3 sets of 4. I can add 4 + 4 + 4 or I could say 3 x 4. Now how many are there?
How many are here? What is the number sentence? You could have said 3 + 3 or 2 + 2 + 2. Using multiplication You might have said 2 x 3 or 3 x 2. The answer will be the same for all!
Try this one. What is the number sentence using multiplication? If you said 3 x 4 or 4 x 3 you are correct. What is the answer?
Now try this one. What is the multiplication fact? Great! 2 x 4 or 4 x 2. What is the product? (that means answer when you are multiplying!
Now it’s your turn! Can you take a digital picture showing an array?
You will see the image in a screen that looks like this. This will bring the image closer or move it farther away. Button to click to take the picture is up here.
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THOAN. THOAN Think of a number… THOAN Multiply it by 3.
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Multiplication is the process of adding equal sets together = 6 We added 2 three times.
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