Understanding Integer Subtraction and Addition

The video tutorial explains how to find the difference between negative numbers by converting subtraction into addition of negatives. It demonstrates using integer addition rules, calculating absolute values, and determining the sign of the sum. The process is visualized on a number line, leading to the final result of negative 111.

What is the first step in solving the problem of negative 45 minus 66?

• Convert the subtraction into addition by adding the opposite.

• Divide both numbers.

• Directly subtract 66 from 45.

• Multiply both numbers.

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CCSS.7.NS.A.1B

How can negative 45 minus 66 be rewritten?

• 66 minus 45

• Negative 45 plus 66

• 45 minus 66

• Negative 45 plus negative 66

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CCSS.7.NS.A.1C

What is the rule for adding two negative integers?

• Add their absolute values and keep the sign positive.

• Subtract their absolute values and keep the sign negative.

• Add their absolute values and keep the sign negative.

• Subtract their absolute values and keep the sign positive.

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CCSS.6.NS.C.7C

What is the absolute value of negative 45?

• 66

• Negative 45

• Zero

• 45

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CCSS.6.NS.C.7C

What is the sum of the absolute values of negative 45 and negative 66?

• 121

• 131

• 111

• 101

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CCSS.7.NS.A.1C

What is the final result of negative 45 plus negative 66?

• Negative 101

• Negative 111

• Negative 121

• Negative 131

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CCSS.6.NS.C.6C

How is the movement on the number line represented for negative 45?

• Move right 66 units from zero.

• Move left 45 units from zero.

• Move left 66 units from zero.

• Move right 45 units from zero.

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CCSS.7.NS.A.1B

After moving left 45 units on the number line, how many more units do you move to represent adding negative 66?

• 0 units

• 45 units

• 66 units

• 111 units

Tags

CCSS.7.NS.A.1B