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Using Standard Form to Write Large Numbers
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What Ordinary Numbers Are These ?
Indices of Ten What Ordinary Numbers Are These ? 2 100 10 3 1,000 4 10,000 5 100,000
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Indices of Ten Notice that the number of zeros matches the index number 2 100 10 3 1,000 4 10,000 5 100,000
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Multiplying Multiples of Ten
Multiply These Numbers 100 x 2 = 200 1,000 x 3 = 3,000 10,000 x 7 = 70,000 100,000 x 9 = 900,000
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Multiplying Multiples of Ten
Did you notice that all you have to do is multiply 1 x whole number & add the zeros behind? 100 x 2 = 200 1,000 x 3 = 3,000 10,000 x 7 = 70,000 100,000 x 9 = 900,000
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Short Cut for Writing Large Numbers
Combine these two steps for writing large numbers. 6 x 10 2 600 = 6 x (10 x 10) = 6 x 100 = 600
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Short Cut for Writing Large Numbers
Remember! The index is the same as the number of zeros when using base 10. 2 6 x 10 600 =
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What is the Ordinary Number?
7 x 10 2 700 =
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What is the Ordinary Number?
8 x 10 3 8,000 =
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What is the Ordinary Number?
9 x 10 4 90,000 =
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What is the Ordinary Number?
4 x 10 2 400 =
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What is the Standard Form?
2 500 5 x 10 =
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What is the Standard Form?
3 6,000 6 x 10 =
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What is the Standard Form?
4 90,000 9 x 10 =
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What is the Standard Form?
5 700,000 7 x 10 =
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