Understanding Positive and Negative Numbers

This video tutorial from MooMoo Math and Science covers the rules for subtracting and adding positive and negative numbers. It begins by explaining how subtracting a negative number turns it into a positive, using examples like -12 minus -9. The video then moves on to adding two negative numbers, such as -12 plus -9, and explains that you add the numbers and keep the negative sign. Several examples are provided to reinforce these concepts, and a link to a related video is mentioned for further learning. The video concludes with a reminder to be kind.

What happens when you subtract a negative number from another number?

• The operation turns into addition.

• The result is always zero.

• The result is always negative.

• The operation turns into subtraction.

If you have -12 minus -9, what is the result?

• -21

• 3

• -3

• 21

When adding two negative numbers, what is the sign of the result?

• It depends on the numbers

• Zero

• Negative

• Positive

Calculate the result of -12 plus -9.

• 3

• -21

• 21

• -3

What is the result of -8 minus -5?

• 13

• -3

• -13

• 3

Which operation is equivalent to subtracting a negative number?

• Subtracting a positive number

• Dividing by a negative number

• Adding a positive number

• Multiplying by a negative number

In the example -4 minus -7, what is the final result?

• -3

• -11

• 11

• 3

What is a key takeaway from the video regarding operations with negative numbers?

• Kindness multiplies kindness.

• Negative times negative is negative.

• Positive plus negative is always positive.

• Always subtract negative numbers.