Question

(7X10^5)(8X10^5) in scientific notation

Answer 1

56*10^10

playing with your calculator will help you remember

Answer 2

5.6 * 10^11 is solution

Answer 3

10^5 means there are 5 zeros after the number, so the two numbers you're multiplying are 700000 and 800000. 7 x 8 = 56, and then you add the ten zeros onto the end. Move the decimal over until there's only one digit to the left and you should get 5.6x10^11.