Mathematics Flashcards
Oral questions
Describe the result of adding a large a positive number and smaller a negative number
The result is a small positive number and is the same as ignoring the signs and subtracting the smaller number from the large
How you convert a fraction to a decimal
Divide the top number by the bottom number
What the key step that must be performed in order to add or subtract unlike fractions
You must find the lowest common denominator
How you divide one fraction to another
You invert the divisor and multiply the numerators together and the denominators together
How can you convert a decimal into percent
Multiply the decimal by 100 and add the percent sign.Move the decimal point two places to the right and add the percent sign.
How you convert a fraction into percent
Converted to a decimal move the decimal point two places to the right and add the percent sign
How do you change a decimal into the nearest equivalent fraction
multiply the decimal by the desired denominator. The result becomes the numerator in the fraction
what are two ways that a ratio may be express
- As a fraction
- By placing a colon (:) between two numbers
- By using the word (to) between the two numbers
whats is proportion
A statement of equality between two or more ratios
Whats is meant by the root of a number
A root is two or more equal smaller numbers that when multiplied together equal the specified number
How do you find the square of a number
Multiply the number by it selft
What is a common method making computations involving very large or very small numbers more manageable.
convert the numbers into scientific notation by using powers of 10
How is 100,000 express as a power of 10
105 10 to the 5th power
whats id the formula to find the area of a rectangle and a triangle
Rec A=L XW Trian= 1/2 (B XH)
Define Pi
Is the constant that express the relationship between the circumference of a circle and its diameter and is approximately equal to 3.1416.
