Calculators

Calculators are all around us--they are in our heads, in our phones, in our computers, in cash registers, they are in apps.

Calculators are useful because:

• They can add, subtract, multiply, divide, find square roots, calculate exponents.
• If you don't know the answer off by heart, you can use a calculator.
• Calculators eliminate human error--because they are always right. 
• Calculators allow us to figure out math quicker