Adding and Subtracting Positive and Negative Numbers on a Number Line

This video tutorial explains how to add and subtract positive and negative numbers using a number line and real-world examples. It covers the rules for adding and subtracting both positive and negative numbers, emphasizing that when signs are the same, you add, and when they are different, you subtract. The video includes practical examples with money to illustrate these concepts and ends with practice questions to reinforce learning.

What is a positive number?

• A number greater than zero

• A number less than zero

• A number with a minus sign

• A number with no sign

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CCSS.6.NS.C.6A

What does it mean if a number has no sign in front of it?

• It is a positive number

• It is a negative number

• It is zero

• It is an imaginary number

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CCSS.6.NS.C.6A

What is the result of adding 3 to 2?

• 1

• 3

• 5

• 6

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CCSS.1.OA.A.1

What happens when you add two positive numbers?

• You subtract them

• You divide them

• You add them

• You multiply them

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CCSS.7.NS.A.1C

What is the rule for subtracting a negative number?

• You subtract it

• You add it

• You multiply it

• You divide it

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CCSS.7.NS.A.1C

If you subtract -3 from 1, what is the result?

• 4

• 1

• 2

• 0

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CCSS.7.NS.A.1C

What is the result of subtracting 2 from 1?

• 3

• -1

• 1

• 0

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CCSS.7.NS.A.1C

If you have £1 and buy something for £2, what is your balance?

• £0

• £-1

• £2

• £1

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CCSS.7.NS.A.1A

What is the result of adding -2 to 2?

• 4

• 2

• 0

• -2

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CCSS.7.NS.A.1B

What should you do when the signs next to each other are different?

• Divide

• Multiply

• Subtract

• Add

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CCSS.7.NS.A.2A

CCSS.7.NS.A.2B