100 stitches with 20 increases is one increase for every 5 stitches. It is a long row, so a good line and a few markers help.
Use markers on a long row
It is easy to lose count in a row of 100 stitches. Slip a marker after every fourth repeat on the first row. After 5 markers you have done 20 increases. Take the markers out on the next row.
You end with 120 stitches, a 20 percent increase. That is a large change, so check the fabric. A big jump can pull the stitches. If you can, spread the increases over two rows.
Two rows instead of one
If your pattern allows it, do 10 increases in each of two rows. Run the calculator twice: 100 stitches with 10, then 110 with 10. The fabric lies flatter than with 20 at once.
The same case in the round
With 100 stitches and 20 increases in the round, the line is:
(K5, M1) 20 times.
Check: 20 M1 and 100 K. You end with 120 stitches.
Nearby counts for 100 stitches
Other increase counts for the same 100 stitches, on a flat row. The calculator wrote each line.
| Stitches | Add | Pattern line | You get |
|---|---|---|---|
| 100 | +18 | K3, M1, (K5, M1) 4 times, (K6, M1) 9 times, (K5, M1) 4 times, K3 | 118 |
| 100 | +19 | K3, M1, (K5, M1) 7 times, (K6, M1) 4 times, (K5, M1) 7 times, K3 | 119 |
| 100 | +20 | K3, M1, K4, M1, (K5, M1) 18 times, K3 | 120 |
| 100 | +21 | K2, M1, (K4, M1) twice, (K5, M1) 16 times, (K4, M1) twice, K2 | 121 |
| 100 | +22 | K2, M1, (K4, M1) 5 times, (K5, M1) 12 times, (K4, M1) 4 times, K2 | 122 |
Questions
How many stitches will I have after I increase 20 across 100?
You will have 120 stitches.
Is it better to increase all at once or over two rows?
Two rows give a smoother fabric. Do it in one row only if your pattern says to.