Operations with fractions and decimals Flashcards
1
Q
In order to add and subtract fractions that DO NOT have a common denominator …
A
The LCM of the denominators must be found
2
Q
When multiplying fractions
A
Multiply each numerator and each denominator together
3
Q
To divide fractions…
A
Invert the second fraction and multiply as normal
4
Q
Convert fraction to a decimal
A
Divide numerator by denominator
5
Q
Convert decimal to a fraction
A
Place numbers to the right of the decimal over the proper base 10 power
6
Q
Convert decimal to a percentage (2)
A
Move decimal point 2 digits to the right
Or multiply the decimal by 100
7
Q
Convert percentages to decimal
A
Divide by 100
Move decimal two points to digits to the left
8
Q
_ compare two things
Can be reduced like fractions
A
Ratios
9
Q
An equation stating two ratios are equal
A
Proportion
