Question

What is this number in standard form?
(5 × 1, 000) + (7 × 10) + (8 × 1) + (4 × ) + (1 × 1.000)

Answer 1

5 • 1,000 = 5,000

7 • 10 = 70

8 • 1 = 8

1 • 1.000 = 1

Then you add the answers together.

You put 4 x but you didn’t put whatever you had to multiply it by. So multiply and add the answer too. And that will be your answer

Answer 2

16,518

(or 1.6518 x 10⁴)