Question

A boy has a 17-decimetre yellow string and a 44-decimetre

blue string. How much longer is the blue string than the
yellow string?

Answer 1

27-Decimetres

Explanation:

You have to subtract since it asked "how much longer." Thats a key word for you to understand whether to subtract, add, multiply, and divide!

Hope this helps :)

Answer 2

44 (decimetre blue string) - 17 (decimetre yellow string)

= 27 decimetres

Subtract the shortest length from the largest length to figure out the distance between the two lengths.