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Integers & the Number Line: Negative Numbers and Adding Integers

Grades 6–7Math

Grades 6–7 Math

Students work with positive and negative numbers on the number line. Wondy the Globe hosts, and the lesson ends with a quick quiz so learners can check what they remember. Try pausing at each quiz question and letting your learner answer out loud.

What's in this lesson

  • Positive and negative numbers
  • Opposites
  • Comparing integers
  • Adding integers on the number line
  • Absolute value

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About this math lesson

Integers are the whole numbers and their opposites: …, −3, −2, −1, 0, 1, 2, 3, …. This free grades 6–7 math video uses the number line to explain negative numbers, compare integers and add positive and negative numbers.

Key ideas

  • Numbers to the left of 0 are negative; numbers to the right are positive
  • −5 is less than −2 because it is farther left
  • Adding a positive number moves right; adding a negative number moves left
  • Opposites, like 4 and −4, add to 0

Questions parents and teachers ask

What are integers?

Integers are whole numbers, their negatives and zero, such as −3, 0 and 7. Fractions and decimals are not integers.

How do you add negative numbers?

Start at the first number on a number line. Move right to add a positive number and left to add a negative number.

Where are negative numbers used in real life?

Temperatures below zero, elevations below sea level and money owed are all negative numbers.

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