Expanded to Standard Form (4-6 Digits) (732)

Teaching Notes

Combine each place term to build the final number; underline each place as you convert.

Vocabulary

Standard Form: Number written using digits.

Expanded Form: Number written as sum of values.

Common Mistakes

• Miscounting zeros when combining terms
• Ignoring a zero place
• Forgetting zeros as placeholders
• Misaligning place values
• Incorrectly combining terms
• Confusing value with digit

Differentiation

Discussion Questions

• How do you verify your assembled number?
• Which place causes the most errors?
• How does expanded form show value?
• Why are zeros important in numbers?
• How do place values relate to ten?
• Can numbers have multiple expanded forms?

Extension Activities

• Invent an expanded expression that equals 50,050
• Create two different expanded expressions for the same number

Parent Tip

Give your child a few numbers and ask them to add them up.

Skill Cluster

Number Sense & Place Value

Skills Practiced

Prerequisites

• 727
• 728
• Understanding place value up to thousands
• Basic addition of multi-digit numbers

Next Steps

• Writing multi-digit numbers in word form
• Standard to expanded form conversion
• Comparing multi-digit numbers
• Standard Form to Expanded Form
• Word Form to Standard Form
• Place Value of Multi-Digit Numbers