Multiply 17 x 105 by using the distributive property a x (b+c)=a x b +a x c. What are the most suitable choices of a, b and c?

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Solution

$17 \times 105 17 \times (100 + 5) 17 \times 100 + 17 \times 5 1700 + 85 = 1785 ⟹ a = 17, b = 100, c = 5$

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