Estimation and Units Flashcards
1
Q
When converting to a smaller unit (e.g. mm to μm), what do you do?
A
You multiply by 1000.
2
Q
When converting to a greater unit (e.g. μm to mm), what do you do?
A
You divide by 1000.
3
Q
What is a centimetre (cm)?
A
1 x 10⁻² metres
4
Q
What is a millimetre (mm)?
A
1 × 10⁻³ metres
5
Q
What is a micrometre (μm)?
A
1 × 10⁻⁶ metres
6
Q
What is a nanometre (nm)?
A
1 x 10⁻⁹ metres
7
Q
What is standard form?
A
A way of expressing numbers - written as a figure between 1 and 10 multiplied by a positive or negative power of 10.
