Comparing and Ordering Negative Numbers Learning Objective To

Comparing and Ordering Negative Numbers

Learning Objective To compare and order negative numbers. Success Criteria • To describe what a negative number is. • To identify which is the smaller/larger number from a set of negative numbers. • To order negative numbers.

Negative Numbers Where might you find a negative number? What is a negative number? What defines a negative number?

Negative Numbers Negative numbers are numbers which are less than zero. The important thing to remember about negative numbers is that they get smaller the farther they go below zero, for example, -20 is smaller than -2.

Negative Numbers Identify the smaller number: a) -7 or -2 b) -22 or -30 c) 0 or -1 d) -2. 5 or -1. 5 e) -0. 2 or -1. 2

Negative Numbers Identify the smaller number: a) -7 or -2 b) -22 or -30 c) 0 or -1 d) -2. 5 or -1. 5 e) -0. 2 or -1. 2

Ordering Negative Numbers Place the following negative numbers in order from smallest to largest. -2 -8 -12 -15 -3 How could this be done?

Ordering Negative Numbers -2 -8 -12 -15 -3 Step 1: The most important thing to remember is that the farther below zero you go, the smaller the number gets. For example, -15 is smaller than -3. Start by identifying the number which is farthest below zero. -15 is the farthest below zero so that is our smallest number.

Ordering Negative Numbers -2 -8 -12 -15 -3 Step 2: Now, using your number line, point to -15 and move up the number line closer to zero. When you come to the next number on the list, write it down. The next number in our list which comes after -15, is -12.

Ordering Negative Numbers -2 -8 -12 -15 -3 Step 3: Continue to slowly move up the number line. Remember to note down any numbers in your list as you come to them. The next number in our list is going to be -8.

Ordering Negative Numbers -2 -8 -12 -15 -3 Step 4: Repeat step 3 until you have placed all the numbers in the correct order. The correct order is: -15, -12, -8, -3, -2

Ordering Negative Numbers Place the following numbers in ascending order. -10 10 -2. 5 -8 -12 Answer: -12, -10, -8, -2. 5, 10

Comparing and Ordering Negative Numbers London: 8°C New York: -5°C Edinburgh: -8°C Warsaw: -4°C Moscow: -9 °C 1. Place the cities in order of their temperatures, starting with the coldest. 2. How much colder is it in Edinburgh than in London? 3. If Madrid was 22°C warmer than Edinburgh, what would the temperature be in Madrid? 4. If Helsinki was 5°C colder than Warsaw, what would the temperature be in Helsinki?

Comparing and Ordering Negative Numbers 1. Moscow: -9 °C Edinburgh: -8°C New York: -5°C Warsaw: -4°C London: 8°C 2. It is 16°C colder in Edinburgh than in London. 3. The temperature would be 14°C in Madrid. 4. The temperature would be -9°C in Helsinki.