Estimation and rounding

Place-value models, even and odd, regular and irregular plurals, pronouns, contractions, solids and liquids, animals and more.

Place-value models, even and odd, regular and irregular plurals, pronouns, contractions, solids and liquids, animals and more.

Place-value models, even and odd, regular and irregular plurals, pronouns, contractions, solids and liquids, animals and more.

Place-value models, even and odd, regular and irregular plurals, pronouns, contractions, solids and liquids, animals and more.

Place-value models, even and odd, regular and irregular plurals, pronouns, contractions, solids and liquids, animals and more.

Place-value models, even and odd, regular and irregular plurals, pronouns, contractions, solids and liquids, animals and more.

Place-value models, even and odd, regular and irregular plurals, pronouns, contractions, solids and liquids, animals and more.