Pre-Algebra Examples

16

$16$ ,

$18$

Step 1

Find the common factors for the numerical part:

$16, 18$

Step 2

The factors for

$16$ are

$1, 2, 4, 8, 16$ .

Tap for more steps...

Step 2.1

The factors for

$16$ are all numbers between

$1$ and

$16$ , which divide

$16$ evenly.

Check numbers between

$1$ and

$16$

Step 2.2

Find the factor pairs of

$16$ where

$x \cdot y = 16$ .

$\begin{array}{c} x & y \\ 1 & 16 \\ 2 & 8 \\ 4 & 4 \end{array}$

Step 2.3

List the factors for

$16$ .

$1, 2, 4, 8, 16$

Step 3

The factors for

$18$ are

$1, 2, 3, 6, 9, 18$ .

Tap for more steps...

Step 3.1

The factors for

$18$ are all numbers between

$1$ and

$18$ , which divide

$18$ evenly.

Check numbers between

$1$ and

$18$

Step 3.2

Find the factor pairs of

$18$ where

$x \cdot y = 18$ .

$\begin{array}{c} x & y \\ 1 & 18 \\ 2 & 9 \\ 3 & 6 \end{array}$

Step 3.3

List the factors for

$18$ .

$1, 2, 3, 6, 9, 18$

Step 4

List all the factors for

$16, 18$ to find the common factors.

$16$ :

$1, 2, 4, 8, 16$

$18$ :

$1, 2, 3, 6, 9, 18$

Step 5

The common factors for

$16, 18$ are

$1, 2$ .

$1, 2$

Step 6

The GCF (HCF) of the numerical factors

$1, 2$ is

$2$ .

$2$