Mr. Chavez, Number line-Subtraction

What subtraction problem is demonstrated using the open number line?

• 67 - 10

• 67 - 18

• 18 - 67

• 60 - 18

Which number is placed at the beginning of the open number line?

• 67

• 10

• 18

• 20

Which number is placed at the end of the open number line?

• 18

• 60

• 67

• 20

What is the first benchmark number reached by jumping from 18?

• 10

• 20

• 30

• 60

How many units are jumped to get from 18 to 20?

• 1

• 2

• 8

• 10

After reaching 20, what is the next type of jump made on the number line?

• Jumps of 1

• Jumps of 5

• Jumps of 10

• Jumps of 100

Why is another jump of 10 not made after reaching 60?

• It would go past 67.

• It is not a multiple of 10.

• The number line ends at 60.

• It is too difficult to count by 10s.

How many jumps of 10 are made to reach 60 from 20?

• 2

• 3

• 4

• 5

What is the total value of the jumps of 10 made from 20 to 60?

• 20

• 30

• 40

• 50

After reaching 60, what is the next type of jump made to get to 67?

• Jumps of 10

• Jumps of 5

• Jumps of 1

• Jumps of 2