Understanding Subtraction and Addition of Integers

The video tutorial explains how to write subtraction problems symbolically and calculate their results. It covers examples of subtraction involving negative numbers, demonstrating how to convert subtraction into addition using a number line. The tutorial also explains formal rules for adding integers with different signs and emphasizes the concept of subtracting a negative as adding a positive. The lesson concludes with a summary of key points and a final example.

What is the symbolic representation of 'negative 9 subtracted from negative 4'?

• 9 - (-4)

• -4 - (-9)

• 4 - 9

• -9 - 4

How do you express 'negative 8 subtracted from 7' symbolically?

• 8 - 7

• 7 - 8

• -8 - 7

• 7 - (-8)

What is the result of 'negative 4 minus negative 9'?

• 13

• 5

• -13

• -5

When subtracting a negative number, what operation is it equivalent to?

• Adding a negative

• Adding a positive

• Subtracting a positive

• Subtracting a negative

What is the result of 'negative 9 minus negative 4' using the number line?

• -5

• 5

• 13

• -13

How do you calculate '7 minus negative 8'?

• 7 - 8

• 7 - (-8)

• 7 + 8

• 7 + (-8)

What is the result of 'negative 8 minus 7'?

• -15

• 1

• 15

• -1

What is the result of 'negative 7 minus 9'?

• -16

• 16

• 2

• -2

What is the result of '8 minus negative 4'?

• 4

• -4

• 12

• -12

What is the equivalent expression for '8 decreased by negative 4'?

• 8 + 4

• 8 + (-4)

• 8 - 4

• 8 - (-4)