Question

(3x10,000) + (12x1,000) +(4x100) + (8x10)+(7x1)

Answer 1

You would do 3 x 10 but then add three zeros then if you x twelve by 10 you get 120 but the. You need to add 2 zeroes on 4 x 100 is four hundred eight times 10is eighty 7x1 is 7 then add
30,000
12,000
400
80
7
The work that out and there's your answer

Answer 2

the answer is 42487 and it was very complicated