This printable card set (24 matching sets in all) allows students the opportunity to practice expanded form in isolation. (*leveled - first set ranges from ones to ten-thousands only; 2nd set ranges ones through millions)
These are best utilized with small groups of students, such as stations or remediation lessons. If only using the expanded form cards, have students number their paper 1-24, and rotate cards until they have recorded all standard numbers on their own.
These are specific to 4th grade and aligned to common core standards. They also apply to 3rd or 5th for remediation or enrichment.