https://www.khanacademy.org/math/cc-third-grade-math/imp-addition-and-subtraction/imp-addition-and-subtraction-missing-value-problems/v/missing-number-for-addition-and-subtraction-within-1000 2021-03-17T19:55:57Z Missing number for 3-digit addition within 1000 Sal solves for the missing number in problems like ___ + 261 = 630. video https://cdn.kastatic.org/googleusercontent/HDdTCIs5jKFIaHYtMI-uPoQ_u_zWK1qNv5dWY-1VwxVzno44Uq364rIkVE3hpPzDirZD2SmAGQlU2bRqVsUHeay0rQ Missing number for 3-digit addition within 1000 Sal solves for the missing number in problems like ___ + 261 = 630. https://cdn.kastatic.org/ka-youtube-converted/5ZMHdtGySvI.mp4/5ZMHdtGySvI.mp4 233 Missing value and word problems https://www.khanacademy.org/math/cc-third-grade-math/imp-addition-and-subtraction/imp-addition-and-subtraction-missing-value-problems/v/missing-numbers-in-three-digit-subtraction 2022-10-06T09:25:13.606060383Z Missing number for 3-digit subtraction within 1000 Use number lines to find the missing value in multi-digit subtraction problems. video https://cdn.kastatic.org/googleusercontent/TDCnnvgxjpAGpK5Pa9mPN_8QdNdn1MG4RS2XPV3lx5hcthj9JcPSGrik3Q8DZXEkStacPdtjlPDxbaUt_vSqDeEZ Missing number for 3-digit subtraction within 1000 Use number lines to find the missing value in multi-digit subtraction problems. https://cdn.kastatic.org/ka-youtube-converted/0Chsg4ns_FI.mp4/0Chsg4ns_FI.mp4 272 Missing value and word problems https://www.khanacademy.org/math/cc-third-grade-math/imp-addition-and-subtraction/imp-addition-and-subtraction-missing-value-problems/e/find-the-missing-number--addition-and-subtraction-within-1000- 2021-08-18T17:41:28.194634261Z Find the missing number (add and subtract within 1000) Practice solving problems like "___ - 445 = 227" where you find the missing value in an addition or subtraction equation. Lindsay exercise https://www.khanacademy.org/math/cc-third-grade-math/imp-addition-and-subtraction/addition-and-subtraction-word-problems/v/three-digit-subtraction-word-problems 2022-10-06T09:25:13.606060383Z Three digit subtraction word problems Work through a word problems that involve 3-digit subtraction. video https://cdn.kastatic.org/googleusercontent/nvLwjuzoRT1l1wwKiHwjWJ50zNZ5bWumGYq7-2gG2fuKGQjbHQ8V0VjlE8MrX9GgKXJuEFIDWurJMPUCUXIZMKuV Three digit subtraction word problems Work through a word problems that involve 3-digit subtraction. https://cdn.kastatic.org/ka-youtube-converted/4TcA1l01s9c.mp4/4TcA1l01s9c.mp4 173 Missing value and word problems https://www.khanacademy.org/math/cc-third-grade-math/imp-addition-and-subtraction/addition-and-subtraction-word-problems/e/add-and-subtract-within-1000-word-problems 2022-05-04T18:31:07.854442121Z Add and subtract within 1000 word problems Practice one-step addition and subtraction word problems with numbers less than 1000. Charlotte Auen exercise