Final answer:
To rewrite 35 + 50 using their GCF, the sum is expressed as (5 × 7) + (5 × 10), since 5 is the GCF of both 35 and 50.
Step-by-step explanation:
To rewrite the sum 35 + 50 using their Greatest Common Factor (GCF) and multiplication, first identify the GCF of 35 and 50. The GCF is 5 since both numbers are multiples of 5. Now, divide each of the numbers by the GCF and express them as a product of the GCF and another whole number, like so:
35 = 5 × 7
50 = 5 × 10
Therefore, the desired expression is:
35 + 50 = (5 × 7) + (5 × 10)