Assignment:
Q1. 27 -31 = -4
Q2. -22 + (-34) = -56
Q3. -35+ 67 = +22
Q4. -47 -33 +25 = -55
Q5. A football team gained 4 yards on a play, lost 8 yards on the next play, then gained 2 yards on the third play. Write an addition expression to describe the total change of yardage. Then determine the sum and explain its meaning.
+4 -8 +2 = -2. The team lost 2 yards in the three plays.
Q6. A helicopter is flying at an altitude of 785 feet. It descends 570 feet, and then ascends 595 feet. Write an expression to represent this situation. Then determine and interpret the sum.
785 -570 +595 = 810. The helicopter is flying at an altitude of 810 feet.
Provide complete and step by step solution for the question and show calculations and use formulas.