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18 + 30 9) 0 --14 10) -21 -(-14) 11) -9(-11) 12) (-15)(7) 13) 14) -90 ÷-15. 15) -(3. 2) 16) -3. 2. 17) -(-3. 2) 18) (-3) 2. Write a number sentence and evaluate. 19) A dolphin swam to a depth of 110 feet below sea level. Then, it rose 85 feet. What was . the dolphin’s final depth? 20) The temperature outside was 22˚F. ................
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