Definition
Parentheses
Parentheses are curved grouping symbols that show a part of an expression belongs together.
Continue from this idea into connected AXIO math.
Defining relationship
The curved fence keeps one chunk of math together.
Parentheses are the curved symbols ( ) used to group part of a mathematical expression. In calculations, they can specify that the grouped part is evaluated before surrounding operations; in other contexts they may show coordinates, inputs, or multiplication.
- 1
parentheses fence one chunk
- 2
evaluate that chunk first
- 3
then multiply
- The curved fence defines a group
- Removing it can change the value
What it means
They make a small fence around one chunk of math. In a calculation, handle the grouped chunk as directed before combining it with the rest. Always read the nearby notation because parentheses can have other mathematical jobs.
Remember it
The curved fence keeps one chunk of math together.
Example
Evaluate 18 − 2 × (5 + 1). First, (5 + 1) = 6; then 2 × 6 = 12; finally, 18 − 12 = 6.
Watch for
Parentheses do not always mean “calculate first” in every setting; for example, (3, 4) can name a coordinate pair.
Common mix-up
In UK and Singapore usage, “brackets” may mean parentheses, but it can also refer to square or curly grouping symbols. “Round brackets” is the precise locale variant.
Exact meaning
Parentheses are the curved symbols ( ) used to group part of a mathematical expression. In calculations, they can specify that the grouped part is evaluated before surrounding operations; in other contexts they may show coordinates, inputs, or multiplication.