Kirsten is making lanyards for a convention. she needs to make 1,000 lanyards and knows that 1 lanyards uses 1.75 feet of cord. how much cord will kirsten need?

kirsten's work is shown below:

1 x 1.75 = 1.75
10 x 1.75 = 10.75
100 x 1.75 = 100.75
1,000 x 1.75 = 1,000.75

describe how kirsten could have solved the problem without writing out the pattern needed.