2 Looking at zero II 0 Keywords: additionadditive identityproperties of zerosubtraction Students explore the additive identity by deciding whether addition and subtraction number sentences are true or false. Preview
2 Number sentences III 1 Keywords: additionadditive identityproperties of zerosubtraction Students explore the additive identity by completing open number sentences. Preview
3 Number sentences II 1 Keywords: additionadditive identityproperties of zerosubtraction Students explore the additive identity by completing open number sentences. Preview
2 How to work out the answer 2 Keywords: additionadditive identityinverseproperties of zerosubtraction Students use number properties to solve problems without calculating. Preview
23 Looking at zero 3 Keywords: additionadditive identitydiscussioninverseproperties of zerosubtraction Students explore the additive identity by deciding whether addition and subtraction number sentences are true or false. Preview