Question

18 meters is equivalent to 18000 millimeters. express the millimeters in scientific notation

Answer 1

The scientific notation:

$a\cdot10^n,\ 1\leq a < 10\ and\ n\in\mathbb{Z}$

1 m = 1,000 mm

18 m = 18,000 mm

$1\underbrace{8000}_{\leftarrow4}=1.8000\cdot10^4=1.8\cdot10^4\\\\\boxed{18\ m=18000\ mm=1.8\cdot10^4\ mm}$

Answer 2

Here is your answer:

In order to find the answer you have to count how many zeros that are in the number.

• $18000$
• $0 = 3$
• $1.8 \times 10^4=$
• Check your work:
• $1.8 \times 10^4= 18000$

Therefore your answer is "1.8 × 10^4."

Hope this helps!