Question

Alice measured her belt to be 22 inches long using a yardstick but she didn't start her measurement at zero .What might be the two endpoints of her belt on her yardstick? Write a subtraction sentence to match your idea.

Answer 1

y-x=22

Explanation:

If Alice had started at zero, and she measured her belt to be 22 inches long

End Point- start point= 22

22-0=22

Let x be the starting point of measurement

Let y be the ending point of measurement

It means therefore that: y-x=22

Her two points will be values of x and y that satisfies the equality

y-x=22.

E.g. If y=28, x=6

28-6=22. These are possible endpoints.

However, if y=27, x=6

y-x=27-6=21

These are not possible endpoints.