Mathematics Flashcards
Describe the result of adding a larger positive number and smaller negative number
smaller positive number and same as ignoring the signs and sbutracting the smaller number from larger
How do you convert a fraction to decimal
divide top number by bottom number
what is the key step that must be preformed in order to add or subtract unlike fractions
lowest (least) common denominator
How do you divide one fraction by another
you invert the divisor and multiply the numerators and denominators together
how can you convert decimal into percent
1.Multipy the decimal by 100 and add %
2.move the decimal point two places to the right and add percent sign
how do you change a decimal into the nearest equivalent fraction
Multiply the decimal by the desired denominator.Result becomes the enumerator in the fraction
what are the 2 different ways that a ratio may be expressed
- Fraction
- placing a colon between the 2 numbers
- using word “to” between the 2 numbers
what is a proportion
a statement of equality between two or more ratios
what is meant by the root of a number
a root is 2 or more equal smaller numbers that when multiplied together, equal specified number
how do you find the square of a number
mutiply the number by itself
EX. 4x4=16
what is a common method of making computations involving very large or small numbers more manageable
covnvert the number into a scientific notion by using powers of 10
how is 100,000 expressed as a power of 10
105 (10 to the 5th power)
what formula is used to find the area of a rectangle and of a triangle
for rectangle- A=LxW
For triangle- A=1/2(BxH)
define Pi
A constant that’s expresses the relationship between the circumference of a circle and its diameter and is approximately equal to 3.1416
Describe a trapezoid
closed, four sided figure having 2 parallel side and 2 nonparallel
