Non-Routine Problems Involving Operations of Integers-L1

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A submarine is at a depth of 300 meters below sea level. It rises 120 meters. What is its new depth?

The submarine is now 180 meters below sea level.

A bank account has a balance of -₱50 (a debt). A deposit of ₱75 is made. What is the new balance?

The balance is now ₱25.

The temperature dropped from 10°C to -5°C. By how many degrees did the temperature change?

The temperature dropped by 15°C.

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