General Flashcards
Describe the result of adding a large positive number and a smaller negative number.
The result is a smaller positive number.
How do you convert a fraction into a decimal?
Divide the numerator by the denominator.
What is the key step that must be performed in order to add or subtract unlike fractions?
Find the lowest common denominator.
How do you divide one fraction by another?
Invert the divisor and multiply.
How can you convert a decimal into a percent?
Multiply by 100 and add the % sign.
How do you convert a fraction into a percent?
Convert into a decimal and then multiply by 100 and adding the % sign.
How do you change a decimal into the nearest equivalent fraction?
Multiply by the desired denominator to get the numerator.
What are two different ways that a ratio may be expressed?
- As a fraction
- By placing a colon (:) between the two numbers
- Use the word “to” between the two numbers.
What is a proportion?
A statement of equality between two or more ratios.
What is meant by the root of the number?
A smaller number that when multiplied by itself two or more times results in the specified number.
How do you find the square of a number?
Multiply the number by itself.
What is the common method of making computations involving very large or very small numbers more manageable?
Convert into scientific notation using powers of 10.
How is 100,000 expressed as a power of 10?
10 to the 5th power.
What formula is used to find the area of a rectangle and a triangle?
Rectangle = L x W Triangle = 1/2 (B x H)
Define Pi.
Pi is a constant that defines the relationship between the circumference and the diameter of a circle. Approximately equal to 3.1416
