Explain why addition and subtraction strategies work, using place value and the properties of operations. (Explanations may be supported by drawings or objects.)
Standard TypeMichigan State Math Standards
Join Mrs. McCartney for a Number Talk with D.C. and Value Pak. We'll add and subtract three-digit numbers with Springling and Minni and Subbi.
Join Mrs. McCartney for an addition number talk with D.C.! Get your hopping skills ready so you can see our Math Might friend Springling to hop forward or back on the numberline to subtract.