Adding and Subtracting Integers on a Number Line

This video tutorial explains how to add and subtract integers using a number line. It covers the placement of positive and negative numbers on the line and provides examples of adding and subtracting integers. The video also demonstrates converting subtraction problems into addition problems to simplify calculations. Key points include moving right for positive numbers and left for negative numbers, and marking the final answer on the number line.

Where do positive numbers lie on the number line?

• To the left of zero

• To the right of zero

• Directly on zero

• Nowhere, as they are not represented on the number line

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CCSS.1.NBT.C.4

CCSS.2.MD.B.6

How do you represent adding a positive number on the number line?

• Move to the left

• Move to the right

• Stay in the same place

• Erase the number line

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CCSS.7.NS.A.1C

What is the result of adding -5 and 11?

• 16

• -6

• -16

• 6

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CCSS.7.NS.A.1B

What does moving to the left on the number line indicate?

• Subtracting a negative number

• Subtracting a positive number

• Adding a negative number

• Adding a positive number

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CCSS.7.NS.A.1B

What is the final position when adding -1 and -4?

• -5

• 3

• -3

• 5

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CCSS.7.NS.A.1B

How do you represent subtraction on the number line?

• By drawing a circle

• Subtraction cannot be represented on the number line

• By removing the first number

• By adding the opposite of the second number

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CCSS.1.NBT.C.4

CCSS.2.MD.B.6

What is the result of 4 minus 8 on the number line?

• 4

• 8

• -4

• 12

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CCSS.7.NS.A.1B

How is negative six plus three represented on the number line?

• Move three spaces to the right only

• Move six spaces to the right, then three to the left

• Move six spaces to the left, then three to the right

• Move three spaces to the left only

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CCSS.7.NS.A.1C

How do you convert a subtraction problem into an addition problem?

• By adding zero to the equation

• By changing the minus sign to a plus sign

• By keeping the first number, changing the minus to plus, and taking the opposite of the second number

• By multiplying both numbers by -1

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CCSS.1.NBT.C.4

CCSS.2.MD.B.6

What key point should be remembered when marking the answer on the number line?

• Mark with a cross

• Mark with a dot where the second arrow stops

• Mark with a square

• No need to mark the answer

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CCSS.1.NBT.C.4

CCSS.2.MD.B.6