Review
What is the method for adding or subtracting fractions?
True/False: All rational or irrational numbers can be represented on the number line.
True
How many significant figures are in 0.00470800?
7
Round 546 798 584 to the nearest million.
547 000 000
4 TB is how many kB
4 000 000 000 kB
Write the understood denominator of 1 for the whole number then multiply numerator by numerator and denominator by denominator
What is a rational number?
Can be expressed as the quotient of two integers a/b
2
Round 4.5836 to 2 decimal places
4.58
What is the prefix and conversion factor symbolized with μ ?
micro- is 10-6
How are percentages changed to decimals or fractions?
Divide by 100
What kind of decimals represent a rational number?
What is the scientific notation of 0.000054?
5.4 x 10-5
Estimate the answer for √ 51.2 * 820.34 / 687.32 =
8 or 9 (Actual answer is 8.54)
What is absolute error?
How are mixed numbers divided?
Change to an improper fraction, flip, and multiply numerator by numerator and denominator by denominator.
What is the fraction equivalent of 0.45454545...?
5/11
What are the requirements for Scientific Notation?
A number between 1 and 10 x 10 to some power
Estimate the size of this calculation: ((6.324)2 - 7.281) x (4.8785 / 24.385)=
6 or 7 (actual answer: 6.54)
What is the absolute error of 54.7 g?
0.05 g
What is 3/8 as a percentage?
37.5%
What is 0.435643564356... as a fraction?
4356/9999 = 484/1111 = 44/101
What are the rules for significant figures?
Nonzeros are always significant.
Zeros are significant if inside or after when there is a decimal point.
Round 35 985 138 to 3 sig figs
3.60 x 107
What range will the mass lie if the scale shows 43 kgs?
42.5 - 43.5