What are some important Math Terms, Order of Operations, and Integers?
Answer
Math Terms
Addition: add, plus, sum, sum of, increased by, total of, more than, greater than, and, added to, gain of
Subtraction: subtract, minus, difference, decreased by, take away, reduced by, deducted from, less than, fewer than, subtracted from
Multiplication: multiply, times, product, product of, multiplied by, of, at, twice, double, triple
Division: divide, divided by, quotient, quotient of, divided into, per, goes into, ratio of, average of, equally divides
Order of Operations
Step 1) do all operations within grouping symbols ( ) [ ] { }. Work from the inside out.
Step 2) exponents
Step 3) Multiply and divide (whichever comes first in the problem).
Step 4) Add and Subtract (whichever comes first in the problem).
Negative Numbers
Rules:
- Negative times a negative leads to a positive answer.
- -3 times -4 = +12
- Negative times a positive leads to a negative answer.
- -5 times +6 = -30
- The same rules apply for division.
- -10 divided by -2 = +5
- -10 divided by +2 = -5
- Also remember that like symbols when multiplying or dividing result in a positive answer. Unlike symbols result in a negative answer.