Question

21. A scuba diver dives to a depth of 50 feet,

then rises 15 feet, then rises 20 feet. Write an
addition expression to describe this situation.
Then determine the sum and explain its
meaning.

Answer 1

50 - 15 = 35

35 + 20 = 55

Total amount of feet diven : 55 feet

Answer 2

73

Explanation:

Based on the given conditions, formulate: 20+50+15-12

Calculate the sum or difference:70+15-12

Calculate the sum or difference:85-12

Calculate the sum or difference:73

get the result:73