1 Math Flashcards
- Describe the result of adding a large positive number and a smaller negative number.
Smaller positive number.
- How do you convert a fraction into a decimal?
Divide numerator by denominator.
- What is the key step that must be performed in order to add or subtract unlike fractions?
Find the least common denominator.
- How do you divide one fraction by another?
You invert the divisor and multiply the numerators together and the denominators together.
- How can you convert a decimal into a percent?
- Multiply the decimal by 100 and add percent sign.
- Move decimal 2 places to the right and add percent sign.
- How do you convert a fraction into a percent?
Convert it to a decimal, move the decimal 2 places to the right, add percent sign.
- How do you change a decimal into the nearest equivalent fraction?
Multiply decimal by desired denominator. The result becomes the numerator in the fraction.
- What are 2 different ways that a ratio may be expressed?
- As a fraction.
- By placing a colon between 2 numbers.
- By using the word to between the 2 numbers.
- What is a proportion?
A statement of equality between 2 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 the specified number.
- How do you find the square of a number?
Multiply the number by itself.
- What is a common method of making computations involving very large or very small numbers more manageable?
Convert the numbers into scientific notation by using power of 10.
- How is 100,000 expressed as a power of 10?
10 ^ 5th power.
- What formula is used to find the area of a rectangle and of a triangle?
Rectangle: A=L×W
Triangle: A=1/2(B×H)
- Define Pi.
Pi is a constant that expresses the relationship between the circumstances of a circle and its diameter and is approx equal to 3.14.
