Question

What number should be the exponent on the 10 so that the two numbers are equivalent?

2.3 × 10^ y = 0.0023



y = -3

y = 3

y = -4

y = 4

Answer 1

Since the number is a small decimal, the exponent should be negative.

Answer 2

Count the zeroes.

Answer 3

3 4 if you count the 10

Answer 4

No..we are only counting the decimal..so yes, 3..so our exponent should be -3.

\(2.3 \times 10^{-3}\)