Sheet # 2
Name: _____________________ Date_____________
1) A company reports income for the first six months of a year as follows:
January : $70,000 profit
February: $60,000 profit
March: $ 2,000 loss
April: $ 5,000 profit
May: $ 8,000 loss
June: $ 11,000 loss
a) How could you represent these income figures in terms of positive and negative numbers?
b) What is the total income for the six-month period?
c) What is the total income for the first three months of the year?
d) What is the total income for the four-month period, March, April, May and June?
2) A boy rows upstream at a speed of 4 miles per hour against a current of 2 miles per hour.
a) How could you use positive and negative numbers in representing these speeds?
b) What would be his actual speed upstream?
3) An airplane traveling at 13,000 feet makes a climb of 5,000 feet followed by a descent of 3,000 feet.
a) Represent the plane's final altitude as the sum of positive and negative numbers.
b) What is the plane's altitude after the descent?