Pearson Algebra 1 Common Core, 2011
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Pearson Algebra 1 Common Core, 2011 View details
7. The Distributive Property
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Exercise 43 Page 50

Write 299 as a difference.

897

Practice makes perfect
To use mental math to multiply, we think of 299 as a difference of 300-1 and then distribute 3 to the terms inside the parentheses.
299 * 3
(300-1)3
(300)3-(1)3
900-3
897
The product equals 897.