Arithmetic Operations include operations such as addition, subtraction, multiplication, and division.
On top of knowing the operation symbol, it is important to know keywords that imply each operation.
| Operation | Keywords |
| Addition | sum, sum of, increased by, more than, combined, together, total of, plus, added to, comparatives (e.g., greater than) |
| Subtraction | difference, difference between/of, decreased by, minus, less, less than, fewer than, left, left over, smaller than |
| Multiplication | product, product of, times, multiplied by, factor of, twice, triple |
| Division | quotient, divide, groups of, split, average, ratio of, per |
Also note, that addition and subtraction are inverse operations of each other meaning you can find an equivalent question using the reverse operation.
\(12+20=32\) and \(32-20=12\)
Multiplication and Division are inverses of each other.
Examples:
1) Find the sum of \(321\), \(22\), and \(1345\).
Solution:
Addition is implied, so \(321+22+1345=1688\)
2) How many groups of eight parts can be found in three hundred thirty-six parts.
Solution:
Groups of implies division, so \(336\div 8=42\) groups
3) If there are 96 aircraft maintenance technicians working at each terminal and there are 12 terminals, how many technicians are there?
Solution:
There are 96 technicians in each terminal, and we want to multiply by a factor of 12.
\(96\times 12=1152\) technicians
