Explanation:
Distributive property is as follows :
a(b+c) = ab + ac
Felix used place value and the distributive property to rewrite the expression 9(278).
Place value of 278 = 200 + 70 +8
He has done like : 9(278) = 9(200 + 70 + 8). Now, the steps are as follows :
9(278) = 9(200 + 70 + 8)
= 9(200)+9(70)+9(8)
= 1800 + 630 +72
= 2502
Hence, option (d) "Distribute the 9 to each addend. Find the sum of (1,800 + 630 + 72)" should be the correct answer.