Slanting Decreases

An easy way to remember which way a decrease slants is by using this logic. A left slanting decrease is an SSK which has a left slant (the S) in the middle of it. A right slanting decrease is a K2tog which has a right slant (the 2). See: S2 = \ /. Left slant, right slant.

Armhole Shaping, SSK, K2Tog

When working armhole shaping of a sweater, start the RS (right side) rows with a ssk (slip, slip, knit) and end with a k2tog (knit 2 together) to following the line of the armhole. You can remember this by knowing the "s" in ssk means to start the row (but work the slant in a stitch or two).

Decreasing Slants - k2tog or ssk

If you have a hard time remembering when to use a k2tog and when to use a ssk while decreasing when using a chart, here’s a tip for you. The symbols on the chart follow the shape of how you work the stitch so use this guide:
/ follows the curve of the number 2 so you k2tog (knit two stitches together)
\ follows the curve of the letter S so you ssk
(slip 1 stitch knitwise, slip 1 stitch knitwise (or purlwise), then knit both of those stitches together through the back loop)