Pre-Algebra Examples

$1 + 1$

Step 1

Round $1$ to $1$ .

$1 + 1$

Step 2

Add $1$ and $1$ .

$2$

Step 3

The approximate value of $1 + 1$ found by front end estimation.

$1 + 1 \approx 2$

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$