https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-negative-numbers-add-and-subtract/x6b17ba59:adding-negative-numbers-fluently/v/signs-of-sums-on-a-number-line 2023-08-31T15:42:23.143811656Z Signs of sums on a number line Let's build intuition for the sign of sum involving negative and positive numbers. We'll decide whether each sum ends to the left or right of 0. Then we'll evaluate exactly to see whether the intuition worked out. Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/bee6ff5f-123e-470d-a043-2daaa3b61c5a_1280_720_base.png Signs of sums on a number line Let's build intuition for the sign of sum involving negative and positive numbers. We'll decide whether each sum ends to the left or right of 0. Then we'll evaluate exactly to see whether the intuition worked out. https://cdn.kastatic.org/ka-youtube-converted/VBEQgXLhBzU.mp4/VBEQgXLhBzU.mp4 444 Adding negative numbers fluently https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-negative-numbers-add-and-subtract/x6b17ba59:adding-negative-numbers-fluently/e/signs-of-sums 2026-03-26T05:40:45.96433927Z Signs of sums Practice determining whether the sum of two numbers is positive, negative, or zero.  Ben S. exercise https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-negative-numbers-add-and-subtract/x6b17ba59:adding-negative-numbers-fluently/e/adding_negative_numbers 2026-03-26T05:40:45.96433927Z Adding negative numbers Practice adding positive and negative single-digit numbers. Sundar Subbarayan exercise