Mathematical Content Flashcards
What does percentage mean?
Divided by 100
How to convert a percentage to a decimal?
- Remove %
- Move decimal two places to the left
What is a decimal place?
Number of digits to the right the decimal point
How can a ratio be expressed as?
-Part-to-part ratio
or
-Part-to-whole ratio
What should a ratio be?
The lowest common denominator
What are significant figures?
When many numbers come after a decimal point, they may be rounded off to 1,2,3 or 4 significant figure
What is the job of a zero in significant figures?
To act as a place holder
What is 0.0024563562 to 1 significant figure?
0.002
What is 0.0024563562 to 4 significant figures?
0.002456
What is 253493.35 to 2 significant figures?
250000
What is standard form?
A way of expressing very large or very small numbers
What is the standard form of 320000?
3.2 x 10^5
What is the standard form of 0.000032?
3.2 x 10^-5
What does = mean?
Equality
What does > mean?
Greater than
