Chapter 8 Assignment #1
Section 8.1
Name______________________
SHOW ALL CALCULATIONS for full marks!!! Include proper units and rounding. Clearly
indicate your final answer.
1. Calculate the unit rate of each product. Round off each answer to the nearest cent. (2 decimal places)
a. $1.99 for 12 pencils
b. $3.98 for 6 bottles of pop
2. A 5 kg bag of grass seed costs $10.80. If the unit rate stays the same, how much does a 25 kg bag cost?
3. Mr. Scrub offers three ways to pay for car washes: a book of six car wash coupons for $33, a special
offer of two washes for $11.50, or one wash for $5.95. Which option offers the least expensive unit
rate for one car wash? Compare the unit rates. Round to two decimal places.
4. If a type of salami at the deli costs $1.39 per 100g, how much will you pay for 350 g of salami? Round
to two decimal places.
5. A butcher shop sells a 4 lb package of chicken legs for $12.57. The supermarket sells chicken legs for
$8.68/kg. Which store has the lower price per kilogram? I kg =2.2 lb Compare unit prices. Round to
nearest cent (two decimal places)
6. The grocery store sells peaches for $0.89/lb. The farmer’s market sells a 10 kg basket of peaches for
$15.50. Determine the price per kilogram at each location. What hast the lower price per kg?
I kg =2.2 lb
7. A 5.0 L of Coloura paint will cover 55m2. A 3.5 L can of Brights paint will cover 30 m2. Determine the
area that 1 L of each type of paint will cover. Which brand of paint will cover a greater surface area?
Round to one decimal place, if necessary.
8. On Wednesday a crew paved 10 km of road in 6 hours. On Thursday, the crew paved 11 km in 7
hours. On which day did they pave the road at a faster rate? Round unit rates to two decimal places.
9. Adam drove 620 km and used 54.8 L of gas. What is his car’s fuel efficiency in L / 100 km? Answer to
two decimal place.
Chapter 8 Assignment #2
Section 8.2
Name______________________
SHOW ALL CALCULATIONS for full marks!!! Include proper units and rounding. Clearly
indicate your final answer.
1. As a custodian, Janine makes a cleaning solution by mixing 60g of concentrated powdered cleanser
into 4 L of water. At the same rate, how much powder will she need for 6 L of water?
2. An office has decided to track how much paper it uses to reduce waste. At the end of each month,
the secretary records the total number of sheets used and their weight. If paper weighs 10.8 lb for
every 500 sheets, how much will 700 sheets weigh?
3. 50L of oil costs $163. How much oil, could you buy for $30?
4. The adult dosage of an antibiotic medicine is 25 mL/80 Kg. How much medicine in mL
is needed for a person with a mass of 95 Kg?
5. Jenna wants to cook a turkey in her oven. The turkey has a mass of 5.38 kg. A cookbook says it will
take 36 minutes to cook 2 lb of meat. How long, to the nearest minute, should Jenna set the timer
to cook the turkey? Round final answer to closest minute.
6. It takes 3.25 hours to fill a 3200 L water tank. Determine the time, in hours, it will
take to fill 2600 L water tank. Round answer to two decimal places.