Here we look at the method for making a basic single decrease slanting to the left. Decreases are commonly used for shaping armholes on a garment. We have shown the method for both the right and wrong side of the fabric.
Placing the decreases away from the edge makes it easier to join fabric pieces when they are finished. The edge is flat and you can make neater seam stitches.
Basic single left-slanting decrease (K2tog tbl):
Placing the decrease one or two stitches in from the edge makes it visible and decorative. To slant the fabric to the left, the decrease is worked at the beginning of the row. Work to the position of the decrease at the beginning of the right-side row.
Keeping the yarn to the back, insert the right-hand needle through the back of the loops of the next two stitches on the left-hand needle, from right to left.
Wrap the yarn around the needle.
Pull the yarn through the stitches to make single stitch, by knitting the two stitches together.
Work to the end of the row. You will be able to see the beginning of the decorative decrease where you knitted the two stitches together at the beginning of the row.
Basic single left-slanting decrease (P2tog tbl):
To work the decrease on the wrong side you need to purl stitches together. Work to the position of the decrease. With the right-hand needle behind the left-hand needle, insert the right-hand needle into the back loop of the second stitch and then into the back loop of the first stitch on the left-hand needle. This twists the stitches.
Wrap the yarn around the right-hand needle.
Pull the yarn through the two stitches to form a single purl stitch and decrease one stitch. Work to end of row.
Working the decreases in this way on the right or wrong side of the fabric will produce a piece of knitting that slants to the left on the right side of the fabric. The decreased stitches show as a decorative ridge.