https://www.khanacademy.org/math/cc-1st-grade-math/cc-1st-add-subtract/cc-1st-add-subtract-10/v/relating-addition-and-subtraction 2021-06-24T11:10:09Z Relating addition and subtraction Sal shows the relationship between 2+3=5, 5-2=3, and 5-3=2. video https://cdn.kastatic.org/googleusercontent/eU1KRW8TV1yRiPju2ZEGkn712cxCWMpwUZArWOqZ7JesFn5jtu2Czp08KpW_8leoJX_B1p6my3N_HXI8KcyJv3w Relating addition and subtraction Sal shows the relationship between 2+3=5, 5-2=3, and 5-3=2. https://cdn.kastatic.org/ka-youtube-converted/zVLjWIftX_o.mp4/zVLjWIftX_o.mp4 125 Addition-Subtraction: Correlation https://www.khanacademy.org/math/cc-1st-grade-math/cc-1st-add-subtract/cc-1st-add-subtract-10/e/relate-addition-and-subtraction 2026-04-07T23:36:17.218592739Z Relate addition and subtraction Practice seeing how addition and subtraction are related. Erin Kats exercise https://www.khanacademy.org/math/cc-2nd-grade-math/x3184e0ec:add-and-subtract-within-20/x3184e0ec:untitled-177/v/sea-monsters-and-superheroes 2021-01-25T15:40:03Z Addition and subtraction word problems: superheroes Sal solves 1 addition and 1 subtraction word problem. video https://cdn.kastatic.org/googleusercontent/qLdiyZbI1a5wb4gDz4Lz3HeYEZBU4ngqruqQDGwFNAz_R0yZUGASL7hZUdJl5OK7Sp0OWRPqPY7chFSXoWTbGlbZ Addition and subtraction word problems: superheroes Sal solves 1 addition and 1 subtraction word problem. https://cdn.kastatic.org/ka-youtube-converted/fGok2nHOjnI.mp4/fGok2nHOjnI.mp4 218 Addition-Subtraction: Correlation https://www.khanacademy.org/math/cc-1st-grade-math/cc-1st-add-subtract/cc-1st-word-problems-within-20/e/addition-and-subtraction-word-problems-within-20--level-1 2026-04-07T23:36:17.218592739Z Addition and subtraction word problems 1 Practice adding and subtracting to solve word problems. Numbers used are 20 or less. Liat Zippin exercise https://www.khanacademy.org/math/cc-2nd-grade-math/x3184e0ec:add-and-subtract-within-20/x3184e0ec:untitled-177/v/exercising-gorillas 2021-03-10T18:51:53Z Addition and subtraction word problems: gorillas Sal solves addition and subtraction word problems. video https://cdn.kastatic.org/googleusercontent/cVO_eUJmGUhtFBD0IY8x4XNm2V1sM1oSCPHtwHBCwFt9twvUwpERD6y8y8tMjg2YgsiIqDydmfDytWg7CSgbpk40 Addition and subtraction word problems: gorillas Sal solves addition and subtraction word problems. https://cdn.kastatic.org/ka-youtube-converted/SfgD7Sm08ns.mp4/SfgD7Sm08ns.mp4 332 Addition-Subtraction: Correlation https://www.khanacademy.org/math/cc-1st-grade-math/cc-1st-add-subtract/cc-1st-word-problems-within-20/e/addition-and-subtraction-word-problems-within-20--level-2 2026-04-08T00:54:09.631945657Z Addition and subtraction word problems 2 Practice solving more challenging word problems with addition and subtraction. Numbers used are 20 or less. Liat Zippin exercise