Write an integer suggested by each of the following examples. Identify the direction words (positive or negative).

• The minimum temperature in Moscow on 1 January 2006 was 15 degrees below zero.
• The maximum temperature in Jerusalem on New Year’s Day 2006 was a mild 23 °C.
• Naomi had no money left, so she borrowed $20 to spend at the movies.
• Sila’s bank statement showed that he was in the red (owed) by $150.
• Luis deposited S20 into his account.
• Our unit at Surfer’s Paradise was 11 floors above the ground floor.
• The lift went 2 floors below ground level.
• Paul ran up 5 flights of stairs.
• ANZ recorded a profit of $1 billion.
• Matthew gained 600 g in one week.
• Telstra shares were down from $3.80 to $1.80.
• The temperature rose by 15°C.
• The store advertised a discount of 15%.
• Oil prices fell by $18 a barrel.
• The year 800 BC.
• An altitude of 700 m below sea level.

Comparing Temperatures

Consider the following temperatures:

• Antifreeze is a chemical used in car radiators. It lowers the freezing point of the coolant to -15°C.
• Azizia in Libya recorded a temperature of 58°C.
• Pure water freezes at 0°C.
• Pure water boils at 100°C..
• The average annual temperature in Antarctica is -49°C.
• The world’s lowest temperature of -86.6°C was recorded at Vostok in Antarctica.

List the temperatures that are negative

List the temperatures that are:

• greater then 20°C
• less than -20°C
• greater than -30°C
• less than -40°C
• between -10°C and -60°C.

True or false? The average temperature in Antarctica is greater than the freezing point of coolant in a car radiator with antifreeze added.