To find out how much it costs Suresh to make all 100 pieces of costume jewelry, you can multiply the cost per piece by the total number of pieces.
Cost per piece = $1.55
Total number of pieces = 100
Total cost = Cost per piece × Total number of pieces
Total cost = $1.55 × 100 = $155.00
So, the cost for Suresh to make all 100 pieces is $155.00.