Flashcards in Mathematics Deck (48)

Loading flashcards...

0

## What is meant by the root of a number?

### The root of a number is one of two or more equal numbers that, when multiplied together, will produce the number.

1

## Define square root.

### The factor of a number that, when squared, will give the number.

2

## How can you perform math with very small or very large numbers?

### Scientific Notation (Powers of 10).

3

## How may 1,000,000 be written?

### 10 to the 6th power.

4

## What formula is used to find the area of a rectangle?

###
A = L x W

Area equals length times width.

5

## What formula is used to find the area of a circle?

### A = pi x r^2 or, A = 0.7854 x D^2

6

## What is the significance of the constant pi?

### Pi is the ratio of the circumference to the diameter of any circle.

7

## What is a trapezoid?

### A closed four-sided figure in which only one pair of opposite sides are parallel.

8

## Show two ways a ratio is expressed.

### 7/8 or 7:8

9

## What is meant by a proportion?

### A statement of equality between two ratios; for example, a/b = b/c is a proportion.

10

## Change 0.29 from a decimal into a percent.

### 29%

11

## What is the rule for dividing fractions?

### Reciprocate the divisor and multiply across.

12

## What are the steps for adding or subtracting unlike fractions?

### Find the least common denominator and convert the fractions to the same denominator.

13

## What are the steps to convert a fraction to a decimal?

### Divide numerator by denominator.

14

## List the steps to convert a fraction to a percent.

### Divide numerator by denominator, move decimal place, affix percentage sign.

15

## How do you convert a decimal to its nearest fraction?

###
Place decimal over denominator equal to decimal length, reduce to simplest form.

Example: 0.38 = 38/100 = 19/50

0.425 = 425/1000 = 17/40

0.7896 = 7896/10000 = 987/1250

16

## What formula is used to find the volume of a cylinder?

### V = 0.7854 x d^2 x h or V = pi x r^2 x h

17

## What formula is used to find the volume of a rectangular solid?

### V = L x W x H

18

## What formula is used to find the area of a triangle?

### A = (B x H)/2

19

## What is the value of the constant pi?

### pi = 3.1416

20

## What is the eighth power of 2?

### 256

21

## What is the square root of 4,096?

### 64

22

## What is meant by a negative number?

### A number less than 0, or a number that is preceded by a minus (-) sign.

23

## What is meant by a ratio and how is a ratio expressed?

### A fraction that compares one number to another; for example, 6:2 is a ratio.

24

## What is an angle?

### A figure formed by two lines radiating from a common point.

25

## What is a quadrant?

### One fourth of a circle.

26

## What is the square of 99?

### 9,801

27

## What is the cube of 5?

### 125

28

## What is the cube root of 1,000?

### 10

29