Understanding Integer Addition

The video tutorial explains how to add two-digit integers, focusing on two scenarios: when integers have different signs and when they have the same sign. In the first scenario, the absolute values are subtracted, and the sign of the integer with the larger absolute value is retained. In the second scenario, the absolute values are added, and the common sign is retained. The tutorial provides examples for each case, demonstrating the process step-by-step.

What is the first step when adding integers with different signs?

• Multiply their absolute values

• Divide their absolute values

• Subtract their absolute values

• Add their absolute values

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CCSS.7.NS.A.1C

If you have 45 and -61, what will be the sign of the sum?

• Cannot be determined

• Zero

• Negative

• Positive

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CCSS.6.NS.C.7C

What is the absolute value of -61?

• 0

• -61

• 61

• 45

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CCSS.7.NS.A.1B

In the example of 45 and -61, what is the result of subtracting the smaller absolute value from the larger one?

• -106

• 106

• -16

• 16

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CCSS.7.NS.A.1C

When adding integers with the same sign, what should you do with their absolute values?

• Divide them

• Subtract them

• Multiply them

• Add them

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CCSS.7.NS.A.1C

What is the sum of -23 and -72?

• -95

• 95

• -49

• 49

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CCSS.7.NS.A.1C

When adding two negative integers, what will be the sign of the result?

• Positive

• Negative

• Zero

• Cannot be determined

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CCSS.7.NS.A.1C