Exploring Integer Expressions and Zero Pairs

Mrs. Angel introduces integer expressions with zero pairs, explaining how positive and negative numbers can be added to form zero pairs. She demonstrates adding and subtracting integers using counters, emphasizing the concept of zero pairs. The lesson includes examples of both addition and subtraction, showing how to transform subtraction into addition by adding the opposite. The video concludes with tips on using zero pairs effectively.

What is a zero pair?

• Two numbers that subtract to zero

• Two numbers that divide to zero

• Two numbers that add up to zero

• Two numbers that multiply to zero

Tags

CCSS.7.NS.A.1C

When adding positive and negative numbers, what symbol is used for positive numbers?

• Division sign

• Plus sign

• Minus sign

• Multiplication sign

Tags

CCSS.7.NS.A.1C

In the example of adding positive five and positive two, what is the total?

• Positive five

• Positive seven

• Negative five

• Negative seven

Tags

CCSS.7.NS.A.1C

What is the result of adding negative five and positive two?

• Negative seven

• Positive seven

• Negative three

• Positive three

Tags

CCSS.7.NS.A.1C

How do you change a subtraction problem into an addition problem?

• Add the same number

• Subtract the same number

• Subtract the opposite

• Add the opposite

Tags

CCSS.7.NS.A.1C

What is the result of subtracting positive two from positive five using counters?

• Positive three

• Negative three

• Positive seven

• Negative seven

Tags

CCSS.7.NS.A.1C

What is the result of subtracting negative two from negative five using counters?

• Negative seven

• Positive seven

• Negative three

• Positive three

Tags

CCSS.7.NS.A.1C

What is the result of subtracting negative two from positive five using counters?

• Positive three

• Positive seven

• Negative seven

• Negative three

Tags

CCSS.7.NS.A.1C

What is the result of subtracting positive two from negative five using counters?

• Negative seven

• Positive seven

• Negative three

• Positive three

Tags

CCSS.7.NS.A.1D

What is the best approach to handle subtraction problems involving zero pairs?

• Use multiplication

• Use equivalent operations

• Use the same number

• Use division

Tags

CCSS.7.NS.A.1D