Question

Ethan planted a tree that was 1.85 meters tall. Next it grew to be 5.30 meters tall. What is an equation that can be used to find x,the numbers of meters the tree has grown?

Answer 1

x=lengthNEW-lengthOLD

Explanation:

The length of the tree used to be only 1.85m. We call this the old length value of the tree, or in short: "lengthOLD"

Next the tree grew to be 5.30m. We call this the new length value of the tree because this measurement was taken later in time, and so after the first measurment. In short: "lengthNEW" is always the newwest value.

To calculate how much the tree has grown, you need to subtract the two lengths. It alway goes in this way:

The newwest number minus the old number.

In this case: x=lengthNEW-lengthOLD