Four-function calculator

A four-function calculator is a calculator that can perform basic operations such as addition, subtraction, multiplication and division. Such calculator can also have functions such as the square root and the exponent.

Four-function calculator

Basic operations using a four-function calculator

Addition : 60 + 32.5

Just hit the following buttons in the order given.

six → zero →add →three →two →decimal point →five→equals.

The display will show 92.5.

Subtraction : 21 - 40 

Just hit the following buttons in the order given.

two → one →subtract → four → zero → equals.

The display will show -19.

Subtraction : -8 + 6 

Just hit the following buttons in the order given.

eight → change sign → plus → six → equals.

The display will show -2

Subtraction : 10 - (- 6) 

Just hit the following buttons in the order given.

one→ zero→ subtract→ 6→ change sign → equals.

The display will show 16

Multiplication : 9 × 7 

Just hit the following buttons in the order given.

nine → multiply → seven → equals.

The display will show 63

Division : -20 ÷ -5 

Just hit the following buttons in the order given.

two → zero → change sign→ divide → five → change sign → equals

The display will show 4

Recent Articles

  1. How to Write an Inequality

    Dec 12, 19 07:51 AM

    Learn how to write an inequality quickly with this easy to follow math lesson.

    Read More

New math lessons

Your email is safe with us. We will only use it to inform you about new math lessons.

                                 Follow me on Pinterest

Real Life Math Skills

Learn about investing money, budgeting your money, paying taxes, mortgage loans, and even the math involved in playing baseball.