Question

Sally begins hiking at an elevation of 224 feet. Then, she descends 131 feet and climbs 67 feet higher than her current position. She then decends 163 feet. Write an addition sentence ti describe the situation. Then determine and interpet the sum

Answer 1

-3

Three feet below the initial elevation

Explanation:

The initial elevation is 224 feet.

We take descent to be negative and ascent to be positive.

The numerical addition expression is

`224+-131+67+-163`

We simplify this to obtain:

`224-131+67-163=-3`

The negative sign means Sally is 3 feet below his initial elevation