Fractions, Decimals, Percents, and Ratios Flashcards
Fractions, Decimals, Percents, and Ratios (Ch. 4, 6, 9) Weighted Averages (Ch. 20)
Assuming positive numbers and the same denominators, the _______ the numerator, the greater the fraction.
**Assuming positive numbers and the same denominators, the greater the numerator, the greater the fraction.
If numerators are the same & positive, compare the denominators. The greater the denominator, the ________ the fraction.
Theory: The sign stays the same when taking the reciprocal!
If numerators are the same & positive, compare the denominators. The greater the denominator, the smaller the fraction.
Theory: The sign stays the same when taking the reciprocal!
A number multiplied by its reciprocal is always _____
1
What do you do if you ant to make a negative fraction positive?
Multiply it by -1
Simplify the expression
When there is an expression with addition or subtraction in the numerator, what are the steps? Simpify the example below:
- Pull out common factors that are applicable to both top and bottom
- split into two fractions if necessary (looking at multiple choice answers)
- simplify
When there is an expression with addition or subtraction in the denominator what are the steps? Simplify the example given.
- Common factor has to be found between numerator and entire denominator and cancelled with numerator to simplify
Never split into two fractions!!
What is 4,000,000 x 0.0003
cancel out the same number of zeroes in the first term as i the second.
400 x 3 = 12,00 (ie 4 zeroes = 4 decimal places)
CGlance at answers and see that to get from 8.25 to 825 you need to times by 100 ie 10^2 which means you reduce the power by 2
Write down respective decimals and percentages of:
What is 4/3 in decimal and percentage form?
Write down respective decimals and percentages of:
