To address the problem, let’s analyze the changes Aisha made to the original numbers in order to estimate the sum.
1. The original numbers are \[tex]$1.45 and \$[/tex]2.38.
2. Aisha changed \[tex]$1.45 to \$[/tex]1.5. To understand this change:
- \[tex]$1.45 is closer to \$[/tex]1.5 when rounded to the nearest tenth.
3. Aisha also changed \[tex]$2.38 to \$[/tex]2.4. Similarly:
- \[tex]$2.38 is closer to \$[/tex]2.4 when rounded to the nearest tenth.
Given these observations, Aisha used the method of rounding to the nearest tenth to estimate the sum.
Therefore, the estimation method she used is rounding to the nearest tenth.
