Understanding Subtraction on a Number Line

This video tutorial explains how to use a number line to subtract both positive and negative numbers. It begins with subtracting positive numbers, demonstrating the process of moving left on the number line. The tutorial then covers subtracting negative numbers, showing how to move right on the number line. The use of brackets is highlighted to clarify operations, and the final calculations are simplified by removing unnecessary symbols.

What is the primary tool used in this tutorial to help with subtraction?

• Calculator

• Graph paper

• Number line

• Abacus

When subtracting a positive number, in which direction do you move on the number line?

• Right

• Left

• Up

• Down

Why are brackets used in the calculations shown in the tutorial?

• To change the operation

• To add more numbers

• To make the operations clearer

• To make the numbers larger

If you start at -2 and subtract 6, where do you end up on the number line?

• -4

• -8

• 8

• 4

What happens to the positive signs inside the brackets in the final calculation?

• They are changed to negative

• They are removed

• They are doubled

• They are highlighted

What is the effect of subtracting a positive number on the number line?

• It moves you to the right

• It moves you to the left

• It moves you up

• It keeps you in the same place

What is the result of subtracting a negative number from a positive number?

• The result is always negative

• The result is always positive

• The result is always zero

• The result can be either positive or negative

When subtracting a negative number, in which direction do you move on the number line?

• Left

• Right

• Stay in place

• Down

What is the final result of 2 subtracting -6?

• -4

• 8

• -8

• 4

How does subtracting a negative number differ from subtracting a positive number?

• It moves you down the number line

• It keeps you in the same place

• It moves you to the left

• It moves you to the right