https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-negative-numbers-add-and-subtract/cc-7th-add-negatives/v/zero-pairs-worked-example 2023-08-31T15:42:23.143811656Z Zero pairs worked example When we have a positive unit and a negative unit, they add up to zero. We call that a zero pair. Let's use integer chips to represent the number -2, but not just with 2 negative chips. This will open the door for us to add and subtract with negative numbers. Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/9ef5f9da-6765-46dc-a5fd-4d06f6abe8eb_1280_720_base.png Zero pairs worked example When we have a positive unit and a negative unit, they add up to zero. We call that a zero pair. Let's use integer chips to represent the number -2, but not just with 2 negative chips. This will open the door for us to add and subtract with negative numbers. https://cdn.kastatic.org/ka-youtube-converted/hwK33GvGIK4.mp4/hwK33GvGIK4.mp4 127 Intro to adding negative numbers https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-negative-numbers-add-and-subtract/cc-7th-add-negatives/e/zero-pairs 2025-02-13T21:04:37.380846713Z Zero pairs Interpret integer chip diagrams with zero pairs. Charlie Auen exercise https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-negative-numbers-add-and-subtract/cc-7th-add-negatives/v/adding-with-integer-chips 2023-08-31T15:42:23.143811656Z Adding with integer chips Let's model and evaluate sums using integer chip diagrams. When all the integer chips are negative, we can just count up our total negatives. When we have a positive integer chip and negative integer chip, those pair up to equal zero. So our sum is whatever chips are left over. Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/a945086a-4bef-4a18-9053-51b257d256b0_1280_720_base.png Adding with integer chips Let's model and evaluate sums using integer chip diagrams. When all the integer chips are negative, we can just count up our total negatives. When we have a positive integer chip and negative integer chip, those pair up to equal zero. So our sum is whatever chips are left over. https://cdn.kastatic.org/ka-youtube-converted/BqfDKV0gPRE.mp4/BqfDKV0gPRE.mp4 226 Intro to adding negative numbers https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-negative-numbers-add-and-subtract/cc-7th-add-negatives/e/add-with-integer-chips 2025-02-13T21:04:37.380846713Z Add with integer chips Add integers with the support of integer chip diagrams. Charlie Auen exercise https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-negative-numbers-add-and-subtract/cc-7th-add-negatives/v/adding-negative-numbers-on-number-line-examples 2021-06-30T17:51:08Z Adding negative numbers on the number line Sal shows how to model 6 + (-2) using vertical number lines. video https://cdn.kastatic.org/googleusercontent/74CrDmxScjtKqXn1vsDH5M7xODQWwmASUbGrgNCBFA4Z2p-LhsS7DqT-uSpr6xW7BY3-a_oo2R_jdpH9wjGg21u3 Adding negative numbers on the number line Sal shows how to model 6 + (-2) using vertical number lines. https://cdn.kastatic.org/ka-youtube-converted/3CKpidALDEg.mp4/3CKpidALDEg.mp4 325 Intro to adding negative numbers https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-negative-numbers-add-and-subtract/cc-7th-add-negatives/e/adding-negative-numbers-on-the-number-line 2026-03-26T05:40:45.96433927Z Adding negative numbers on the number line Practice matching number line diagrams to addition expressions involving negative numbers. Ben S exercise