Subtract Numbers: Number Line

The video tutorial explains the concept of number lines, highlighting that all number lines have a zero, with positive numbers to the right and negative numbers to the left. It demonstrates how to perform subtraction on a number line, emphasizing moving left to decrease numbers. Examples include subtracting positive and negative numbers, showing how results can be negative. The tutorial also covers identifying correct number line representations for subtraction problems.

What is the position of zero on a number line?

• Zero is both positive and negative.

• Zero is neither positive nor negative.

• Zero is positive.

• Zero is negative.

When subtracting on a number line, which direction should you move?

• Up, towards positive numbers.

• Right, towards larger numbers.

• Down, towards negative numbers.

• Left, towards smaller numbers.

If you start at 7 on a number line and subtract 5, where do you end up?

• At -2

• At 12

• At 2

• At 5

What is the result of subtracting 9 from 7 on a number line?

• 2

• -2

• 16

• -16

If you start at -5 and subtract 4 on a number line, where do you end?

• -1

• 1

• 9

• -9