Mathematics Flashcards

1
Q

Describe the result of adding a large positive number and a smaller negative number

A

The result is a smaller positive number

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2
Q

What is a mixed number

A

A combination of a whole number and a fraction

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3
Q

How do you convert a fraction into a decimal

A

Divide the top number by the bottom number

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4
Q

What is the key step that must be performed in order to add or subtract unlike fractions

A

You must find the lowest common denominator

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5
Q

How do you divide one fraction by another

A

You invert the divisor and multiply the numerators together and the denominators together

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6
Q

How do you convert a decimal into a percent

A

Multiply the decimal by 100 add a percent sign or move the decimal two places to the right and add a percent sign

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7
Q

How do you convert a fraction into a percent

A

Convert it to a decimal move the decimal point two places to the right and add the percent sign

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8
Q

How do you change a decimal into the nearest equivalent fraction

A

Multiply the decimal by the desired denominator. The result becomes the numerator in the fraction

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9
Q

What is a ration

A

The comparison of two numbers or quantities

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10
Q

What are two different ways that a ratio may be expressed

A

As a fraction, by placing a colon between the two numbers, by using the word to between the two numbers

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11
Q

What is a proportion

A

A statement of equality between Two or more ratios

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12
Q

What is meant by the root of a number

A

A root is two or more equal smaller numbers that, when multiplied together, equal the specified number

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13
Q

How do you find the square off a number? Give an example

A

Multiply the number by itself
Examples: 4x4=16

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14
Q

What is a common method of making computations involving very large or very small numbers more manageable

A

Convert the numbers into scientific notation by using powers of 10

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15
Q

How is 100,000 expressed as a power of 10

A

Ten to the 5th power

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16
Q

What formula is used to find the area of a rectangle

A

Area = length X width

17
Q

What formula is used to find area of a triangle

A

Area = 1/2 (base X height )

18
Q

Define Pi

A

Pi is a constant that expresses the relationship between the circumference of a circle and its diameter and is approximately equal to 3.1416

19
Q

What is the formula to find area of a circle

A

A= Pi X radis^2

20
Q

Name the six different types of triangles

A

Equilateral, isosceles, acute, right, obtuse, scalene

21
Q

What is a parallelogram

A

A four sided figure with two pairs of parallel sides

22
Q

What is an equilateral triangle

A

A triangle with three equal sides

23
Q

What is the hypotenuse in a right triangle

A

The side opposite the right angle

24
Q

Describe a trapezoid

A

A trapezoid is a closed, four sided figure having two parallel sides and two sides that are not parallel

25
Q

How do you find volume of a cylinder

A

Volume = Pi X radius ^2(squared) X height of the cylinder