# Real number calculator

## Result:

### Calculation steps

1. Subtract: 8 - (-1) = 8 + 1 = 9
2. Divide: -3 / (-3) = 1
3. Add: the result of step No. 1 + the result of step No. 2 = 9 + 1 = 10
4. Exponentiation: the result of step No. 3 ^ 2 = 10 ^ 2 = 100
5. Multiple: 3 * the result of step No. 4 = 3 * 100 = 300
The calculator makes basic and advanced operations with real numbers, natural numbers, integers, rational and irrational numbers. It also shows detailed step-by-step information about calculation procedure. Solve problems with two, three, or more real numbers in one expression. Add, subtract, and multiply real numbers step-by-step. This calculator performs addition, subtraction, multiplication, or division for calculations on positive or negative real numbers. This online real number calculator will help you understand how to add, subtract, multiply, or divide real numbers.

Real numbers are numbers that can be found on the number line. This includes the natural numbers( 1,2,3 ...), integers (-3) rational (fractions) and irrational numbers (like √2 or π). Positive or negative, large or small, whole numbers or decimal numbers are all real numbers. Imaginary numbers and complex numbers cannot be draw in number line, but in complex plane.

#### Examples:

addition of real numbers: -3/2 + pi/2
subtraction of real numbers: 32.14 - 67.32
parenthesis: sin(pi/2) * (1.1+2.2+3.3)
Complex example: Priority of operators and brackets: 3⋅[8−(−1) + (−3)÷(−3)]^2

## Real numbers in word problems:

• Calculation How much is sum of square root of six and the square root of 225?
• Chi square A manufacturer of phone batteries claims that his batteries' lives are approximately normally distributed with a standard deviation equal to 0.9 years. If a random sample of 10 of these batteries has a standard deviation of 1.2 years. Do you think that th
• Geometric progression 4 8,4√2,4,2√2
• Swimming pool A swimming pool 30 meters long is filled with water to a depth of 1 meter at the shallow end, and 5 meters at the deep end and abcd the vertical area of the pool has the shape of a trapezium with the area given by S(abcd)= 1/2 (ab + cd) x ad. What is the
• Kitchen Kitchen roller has a diameter 70 mm and width of 359 mm. How many square millimeters roll on one turn?
• Binomials To binomial 36x2-168x add a number to the resulting trinomial be square of binomial.
• Cube surface area The Wall of the cube has a content area 99 cm square. What is the surface of the cube?
• Numeric question It is possible negative irrational number?
• If x=4 If x=4 and y=-3, what is the value of the expression x² + 2xy - 4x + 3y + y²?
• Harmonic mean Harmonic means of 6 and 12
• Geometric progression Fill 4 numbers between 4 and -12500 to form geometric progression.
• Primes 2 For what primes p,q,r is true: p2-(q+r)2=647
• Simplify Simplify powers multiplication: (3+22)(5-42)
• Evaluate 5 Evaluate expression x2−7x+12x−4 when x=−1
• The square Calculate the area and perimeter of a square with side a = 15 dm S =, O =
• The square The square root of 25 times the square root of 81 is what number?
• Cone and cube About what percentage hase cone with base radius r larger volume than same high cube with square base with edge length r?