Simplified Expression Activity
For each problem, match the justification to the problem step.
| Problem 1 | Justification |
| 4 + [2 (1+7) - 1] | |
| 4 + [2 (8) - 1] | |
| 4+[16-1] | |
| 4+[15] | |
| 19 |
Simplify the expression within the grouping
symbols.
symbols.
Combine like terms.
Multiply within the grouping symbols.
Combine like terms within the innermost
grouping symbols.
grouping symbols.
Start with a given expression.
| Problem 2 | Justification |
| 7-(3x2)+4 | |
| 7-(6)+4 | |
| 1+4 | |
| 5 |
Combine like terms.
Start with a given expression.
Combine like terms.
Simplify the expression within the grouping
symbols.
symbols.
| Problem 3 | Justification |
| (3+2)+(12-7) | |
| 5+(12-7) | |
| 5+5 | |
| 10 |
Simplify the expression within the second set
of grouping symbols.
of grouping symbols.
Combine like terms.
Start with a given expression.
Simplify the expression within the first set of
grouping symbols.
grouping symbols.
