## Glossary of Arithmetic

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- How do you add two like signed numbers?
- Add the absolute values and keep the sign: +4 + +10 = 14

- How do you add two unlike signed numbers?
- Subtract the AV of the smaller number from the AV of the larger number and add the sign of the larger number.

+4 - -10 = -7

- How do you multiply like signed numbers?
- Multiply the absolute values. The number will always be positive.

-3 x -3 = 9

- How do you multiply unlike signed numbers?
- Multiply the absolute values. The number will always be negative.

-3 x +3 = -9

- How do you divide like signed numbers?
- Divide the absolute values. The number will always be positive.

+15 d +5 = 3

- How do you divide unlike signed numbers?
- Divide the absolute values. The number will always be negative.

+15 d -5 = -3

- What is the order of operations?
- Parenthesis, Exponents, Multiply, Divide (left to right), Addition, Subtraction (left to right)

- What is [n]?

[-3(7-2)] - Absolute (positive) value of the number

The absolute value of 7-2 multiplied by -3= 15

- What is the LCM?
- The least common multiple is the smallest number divisible by two numbers.

- How do you find the LCM?
- Prime factor both numbers and multiply the non repeating factos (all of the fictors of the 1st number and nonrepeating factors of the 2nd number.