Basic Math Examples

15 \cdot 15

$15 \cdot 15$

Step 1

Round

15

$15$ to

20

$20$ .

20 \cdot 15

$20 \cdot 15$

Step 2

Round

15

$15$ to

20

$20$ .

20 \cdot 20

$20 \cdot 20$

Step 3

Multiply

20

$20$ by

20

$20$ .

400

$400$

Step 4

The approximate value of

15 \cdot 15

$15 \cdot 15$ found by front end estimation.

15 \cdot 15 \approx 400

$15 \cdot 15 \approx 400$

⎡ ⎢ ⎣ \begin{matrix} x^{2} & \frac{1}{2} \sqrt{π} & \int x d x \end{matrix} ⎤ ⎥ ⎦

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