Adding and Subtracting Integers

This video tutorial explores techniques for adding and subtracting integers. It introduces two methods: converting subtraction into an addition statement by reversing signs and using counters to add integers. The video provides examples and encourages practice with additional problems, emphasizing the zero principle in integer addition.

What is the first step in converting a subtraction problem into an addition problem?

• Add the numbers directly.

• Reverse the sign of the second number.

• Ignore the signs and add.

• Multiply both numbers by -1.

How do you write the expression '+2 - +3' as an addition expression?

• -2 - -3

• +2 + +3

• +2 + -3

• -2 + +3

What happens to the sign of the second number when converting subtraction to addition?

• It stays the same.

• It becomes positive.

• It becomes negative.

• It is ignored.

What is the first step in solving '+2 - +4' using the conversion technique?

• Write it as '-2 - -4'

• Write it as '-2 + +4'

• Write it as '+2 + -4'

• Write it as '+2 + +4'

In the expression '+3 - -4', what is the result after converting to addition?

• -3 + +4

• -3 - -4

• +3 + -4

• +3 + +4

What is the zero principle in the context of adding integers?

• Subtracting zero from any number gives the same number.

• Adding a positive and a negative of the same value results in zero.

• Multiplying any number by zero results in zero.

• Adding zero to any number gives the same number.

What is the result of '+4 - -6' after converting to addition?

• +4 + +6

• +4 + -6

• -4 + +6

• -4 - -6

How many positive counters are needed to represent '+2'?

• Four

• Three

• Two

• One

What is the result of adding '+2' and '-3' using counters?

• -1

• +1

• -5

• +5

How do you represent '-3' using counters?

• Two positive counters

• Two negative counters

• Three negative counters

• Three positive counters