write 16 + 32 as a product of two factors using the GCF and the distributive property

16 + 32 = ? (? + ?)
4 8 16 32
1 2 4 8
1 2 4 8

16 + 32 = 16(1 + 2) + 32(1) = 16(1 + 2) + 16(2) = 16(1 + 2 + 2) = 16(5) = 80