Quick Check #2 Number Lines Practice link

Which number line represents the following expression? (9) + (-6)

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Tags

CCSS.7.NS.A.1B

Which expression is represented by the model below?

• 4 + (-3) = 1

• (-3) + 4 = 1

• 7 - 3 = 4

• (-3) + 7 = 4

Answer explanation

The model shows the addition of -3 and 4, which equals 1. This matches the expression (-3) + 4 = 1, confirming it as the correct choice.

Tags

CCSS.7.NS.A.1B

Which addition equation matches the problem shown on the number line?

• -8 + 4 = 4

• 4 + (-8) = -4

• 12 - 8 = -4

• -8 + (-4) = -12

Answer explanation

The number line shows a movement from 4 to -4, which corresponds to adding -8 to 4. Thus, the correct equation is 4 + (-8) = -4, as it accurately represents this movement.

Tags

CCSS.7.NS.A.1B

Which addition equation matches the problem shown on the number line?

• 3 + 7 = 10

• -3 + 7 = 4

• -3 + (-7) = -10

• 10 - 7 = 3

Answer explanation

The number line shows a movement to the left, indicating negative values. The equation -3 + (-7) = -10 correctly represents this movement, as it combines two negative numbers, resulting in -10.

Tags

CCSS.7.NS.A.1B

Which model represents 3 + (-1)?

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Tags

CCSS.7.NS.A.1B

Which equation is represented by the model?

• -2 + 4 = -2

• 4 + (-6) = -2

• 4 + (-2) = 6

• -2 + (-4) = -6

Answer explanation

The equation 4 + (-6) = -2 correctly represents the model, as it simplifies to 4 - 6, which equals -2. The other options do not match this relationship.

Tags

CCSS.7.NS.A.1B

Refer to the number line diagram with arrows. Which equation is represented by the diagram?

• -4 + 5 = 1

• 5 + (-4) = 1

• -5 + (-4) = -1

• -5 + (-4) = -9

Answer explanation

The number line shows a movement from -4 to 1, which indicates adding 5. Thus, the equation represented is -4 + 5 = 1, confirming that the correct choice is the first option.

Tags

CCSS.7.NS.A.1B

Refer to the number line diagram with arrows labeled 8 and -8. Which equation is represented by the diagram?

• 8 + 8 = 0

• 8 + (-8) = 0

• -8 + (-8) = -16

• 8 + 8 = 16

Answer explanation

The diagram shows 8 and -8, which represent the equation 8 + (-8) = 0. This indicates that adding 8 and its opposite, -8, results in zero, confirming the correct choice.

Tags

CCSS.7.NS.A.1B

Refer to the diagram with the vertical number line and arrows. Which of the following equations correctly represents the sum indicated by the arrows?

• 20 + 15 = 35

• -20 + (-15) = -35

• -20 + 15 = -5

• 20 + (-15) = 5

Answer explanation

The arrows indicate a positive 20 and a negative 15. The correct equation representing this sum is 20 + (-15) = 5, which shows the addition of a positive and a negative number resulting in 5.

Tags

CCSS.7.NS.A.1B

(Refer to the diagram with a vertical number line and two arrows, one pointing up from 0 to 10 and one pointing down from 10 to 0)

• 10 + 10 = 20

• 10 + (-10) = 0

• 10 + 0 = 10

• -10 + (-10) = -20

Answer explanation

The correct choice is 10 + (-10) = 0, as adding 10 and -10 cancels each other out, resulting in zero. The other options do not represent this cancellation effect.

Tags

CCSS.7.NS.A.1B