operations on rational numbers 3

In the world’s coldest freezer, sodium gas was cooled to a temperature of 78.5°C below zero and then cooled 194.65°C more. What was the new temperature of the sodium gas?

• –273.15°C

• –272.7°C

• –202.5°C

• –116.15°C

Kate gets a paycheck twice a month. Every month, a total of $345.67 is deducted from her paycheck for taxes. If she has been paid 7 paychecks so far this year, which best represents the total effect the taxes have had on her paychecks?

• –$2,419.69

• –$1,209.85

• $1,209.85

• $2,419.69

A recipe calls for 1/2 cup of sugar and 1/3 cup of cinnamon. What is the measure of the two ingredients combined?

• 5/6 cup
• 2/5 cup
• 1/6 cup
• 1/5 cup

After a pizza party there are 4 2/3 pizzas left over. If the pizzas are divided so that party goers can take home 1/6 of a pizza, how many guests can take home pizza?

• 26 guests
• 28 guests
• 8 guests
• 33 guests

 A girl's hair is 12 3/8 inches long. If she has 2 1/2 inches cut off, how long will her hair be?

• 10 1/4 inches
• 10 3/16 inches
• 9 7/8 inches
• 10 7/8 inches

Julie walks 10 dogs a week and gets paid $4.25 for each dog. How much money does she make in one week?

• $42.50

• $442.50

• $425.00

• $3.50

Mr. Smith has an account balance of -$275.78.  He deposits $539.20 into his account.  What is Mr. Smith's account balance now?

• $813.98
• $263.42
• $539.78
• $345.98

If a plant grows 1/4 cm every day for 21 days, what is the total amount of growth?

• 82 cm
• 25 cm
• 17 1/4 cm
• 5 1/4 cm

A jug of orange juice contains 40.75 fluid ounces. It is shared equally among 5 people. How many ounces of orange juice does each person receive?

• 81.45 fl. oz.

• 203.75 fl. oz.

• 20.75 fl. oz.

• 8.15 fl. oz.

Jamie earned $725 dollars by working 5 days in a week. What is the average amount that she earned per day? 

• $145
• $3625
• $45
• $9000