Understanding Addition and Number Lines

Mrs. Lopez teaches Grade 7 students how to add integers without using a number line. The lesson covers counting up and down, understanding distances and positions on number lines, and provides examples of integer addition. Students learn to write equations from verbal descriptions, enhancing their understanding of integer operations.

What is the main focus of the lesson introduced by Mrs. Lopez?

• Subtraction of integers

• Division of integers

• Multiplication of integers

• Addition of integers without a number line

In the counting up model, what is the result of 2 plus 4?

• 2

• 4

• 6

• 8

How does the counting down model handle 2 plus negative 4?

• The result is 0

• The result is negative 2

• The result is 2

• The result is 6

What is the distance between 2 and the sum of 2 plus 6?

• 8

• 6

• 4

• 2

If you add 81 to 54, how far is the sum from 54?

• 135 units

• 81 units

• 27 units

• 54 units

When adding a negative number to 14, in which direction do you move on a number line?

• Up

• Down

• Left

• Right

What is the result of negative 5 plus 3 on a number line?

• Negative 2

• 0

• 1

• Negative 8

What is the final position on the number line for 7 plus negative 8?

• 1

• Negative 1

• Negative 15

• 0

How do you write an equation for the sum of 6 and a number that is 15 units to the left of 6?

• 6 + 15 = 21

• 6 - 15 = -9

• 6 + (-15) = -9

• 6 + 9 = 15

What does the arrow diagram represent in the context of writing equations?

• The distance and direction of the sum from a number

• The direction of addition

• The direction of subtraction

• The multiplication factor