Question

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.

Answer 1

when you are multiplying, you are supposed to multiply both the whole and partial numbers, for example 1.25 x 100 = 125

Answer 2

It's 125 if that helps u