# 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?
• Kitchen Kitchen roller has a diameter 70 mm and width of 359 mm. How many square millimeters roll on one turn?
• 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
• Cube surface area The Wall of the cube has a content area 99 cm square. What is the surface of the cube?
• 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
• Numeric question It is possible negative irrational number?
• Binomials To binomial 36x2-168x add a number to the resulting trinomial be square of binomial.
• 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?
• Unknown number I think number. If subtract from the twelfth square the ninth square I get a number 27 times greater than the intended number. What is this unknown number?
• Garden The garden around the new farm is divided as follows: 35% vegetable, 30% fruit orchards, 10% flowers and the remaining 120 m2 are lawns. What is the total area of the garden?
• Geometric progression Fill 4 numbers between 4 and -12500 to form geometric progression.
• Martha Martha likes to walk in the park, the park is square, 7/10 mi on each side. One morning Martha walked around the entire park 3 1/2 times before stopping to rest. How far had she walked? Solve quadratic equation: 2x2+28x-550=0 Calculate standard deviation for file: 63,65,68,69,69,72,75,76,77,79,79,80,82,83,84,88,90 1 mason casts 30.8 meters square in 8 hours. How long casts 4 masons 178 meters square? If x=4 and y=-3, what is the value of the expression x² + 2xy - 4x + 3y + y²?