2023-12-142023-12-14Mathematics, Mathshttps://dsstorage-hbmsu.com/handle/123456789/1953Topic C : Strategies for Solving Change or Addend Unknown ProblemspdfAddition, Sum, Subtraction, Difference, Module 1513.2 G1M2 L1 2015QA115 .G1M2 L23 2015Lesson 23 Solve add to with change unknown problems, relating varied addition and subtraction strategies.Text