# Lesson Worksheet: Order of Operations: Negative Numbers Mathematics

In this worksheet, we will practice evaluating numerical expressions involving negative numbers using the order of operations.

Q1:

The weather forecast was announced to be in Cairo and in London. Calculate the difference in temperatures between the two cities.

Q2:

Fill in the blank: .

• A
• B
• C
• D

Q3:

A teacher asked his students to find an expression that can be used to find the difference between the height of the Empire State Building, 443.2 m, and the height of the Eiffel Tower, 324 m. The first student said the expression is , while the second said that it is . Who was correct?

• Athe second student
• Bthe first student

Q4:

The table shows the temperatures for one day in January in a city.

 Time Temperature (F) 12:00 am 1:00 am 2:00 am 3:00 am 4:00 am 5:00 am 6:00 am 7:00 am 8:00 am 9:00 am 10:00 am 11:00 am −2 −2 −3 −3 −5 −5 −5 −4 −2 0 3 5
 Time Temperature (F) 12:00 pm 1:00 pm 2:00 pm 3:00 pm 4:00 pm 5:00 pm 6:00 pm 7:00 pm 8:00 pm 9:00 pm 10:00 pm 11:00 pm 7 10 12 15 14 13 11 5 3 −1 −1 −2

Find the change in temperature between 8:00 am and 6:00 pm.

• A
• B
• C
• D
• E

Write an integer to describe the change in temperature between 3:00 pm and 9:00 pm.

• A16
• B
• C14
• D
• E

Interpret this integer.

• AThe temperature decreased by between 3:00 pm and 9:00 pm.
• BThe temperature decreased by between 3:00 pm and 9:00 pm.
• CThe temperature decreased by between 3:00 pm and 9:00 pm.
• DThe temperature increased by between 3:00 pm and 9:00 pm.
• EThe temperature increased by between 3:00 pm and 9:00 pm.

Q5:

The temperature inside a house is , and the temperature outside is lower. What is the temperature outside the house?

Q6:

Fill in the blanks: .

Q7:

Emma and Natalie go to two different cities. When they leave, the outside temperature is . When Emma arrives at her destination, the weather is sunny with a temperature of , while Natalie finds rainy weather with a temperature of .

Express the difference between the temperature at their destination and that where they departed.

• AEmma: , Natalie:
• BEmma: , Natalie:
• CEmma: , Natalie:
• DEmma: , Natalie:
• EEmma: , Natalie:

Who experienced the largest temperature change?

• AEmma
• BNatalie
• CIt was the same for both.

Q8:

Calculate .

Q9:

Evaluate .

Q10:

Calculate .

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