27 lines
493 B
Markdown
27 lines
493 B
Markdown
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---
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tags:
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- prealgebra
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---
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# Order of operations
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1. Evaluate expressions in **parentheses**
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1. Evaluate **exponents**
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1. Evaluate **multiplications and divisions** from left to right in the order
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that they appear
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1. Evaluate **additions and subtractions** from left to right in the order that
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they appear.
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In the absence of grouping symbols, addition holds no precedence over
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subtraction and vice versa.
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```
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15 - 8 + 4 = 7 + 4
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= 11
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```
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```
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15 - 8 + 4 = 15 - 12
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= 3
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```
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