70. 180-120=60, and 180-60+50=70
You add five to each product when you multiply numbers by five. if 5x10 is 50, 5x11 is 55. so 5x 12 would be 60 because 55+5=60
Exponents can make the problem smaller and look less confusing. If you see a problem with 5*5*5*5*5*5*5*5 then you're going to eventually loose count and will have to keep repeating. But if you put 5 to the 8th power then you know right away just to multiply 5, (8) times,
Answer:
5 and 15
Step-by-step explanation:
