Question

Convert 145.0 mm to meters and express the answer to the correct number of significant digits. A) 0.1450 m B) 0.145 m C) 145,000 m D) 1.450 m E) 14.50 m

Answer 1

B

Step-by-step explanation:

When you change the value of a unit so it becomes a different SI unit, you move the decimal place to the left when increasing and to the right when decreasing.

Kilometers->Hectometers->dekameters->meters->decimeter->centimeter->millimeter

In this case, you are increasing from millimeters to meters, which, according to the arrows above, means you move the decimal place 3 places to the left.

145.0 mm-> .145 m

Hope this helps!

Answer 2

The correct answer is B) 0.145 m

Explanation: Km Hm Dm Base Dm Cm Mm

you move to the left 3 spaces to reach meters