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