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Arithmetic (all content)

Unit 1: Lesson 9

Ways to write whole numbers (expanded form and written form)
Math
Arithmetic (all content)
Place value
Ways to write whole numbers (expanded form and written form)
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Whole numbers in expanded form review

CCSS.Math:
4.NBT.A.2
Google Classroom
Review writing whole numbers in expanded form, and try some practice problems.

Expanded form

Expanded form is a way to write a number by adding the value of its digits.
We can use a place value chart to think of the value of a number's digits.

Example

Let's write start color #11accd, 7, end color #11accd, start color #7854ab, 2, end color #7854ab, start color #1fab54, 2, end color #1fab54, start color #ca337c, 9, end color #ca337c in expanded form.
ThousandsHundredsTensOnes
start color #11accd, 7, end color #11accdstart color #7854ab, 2, end color #7854abstart color #1fab54, 2, end color #1fab54start color #ca337c, 9, end color #ca337c
7229, equals, start color #11accd, 7, end color #11accd, start text, space, t, h, o, u, s, a, n, d, s, end text plus, start color #7854ab, 2, end color #7854ab, start text, space, h, u, n, d, r, e, d, s, end text, plus start color #1fab54, 2, end color #1fab54, start text, space, t, e, n, s, end text, plus, start color #ca337c, 9, end color #ca337c, start text, space, o, n, e, s, end text
empty space, equals, start color #11accd, 7000, end color #11accd, plus, start color #7854ab, 200, end color #7854ab, plus, start color #1fab54, 20, end color #1fab54, plus, start color #ca337c, 9, end color #ca337c
7229 in expanded form is start color #11accd, 7000, end color #11accd, plus, start color #7854ab, 200, end color #7854ab, plus, start color #1fab54, 20, end color #1fab54, plus, start color #ca337c, 9, end color #ca337c.
Want to learn more about expanded form? Check out this video.

Practice

Problem 1
What is 5, comma, 000, plus, 300, plus, 8 in standard form?
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4
  • an exact decimal, like 0, point, 75
  • a multiple of pi, like 12, space, start text, p, i, end text or 2, slash, 3, space, start text, p, i, end text

Want to try more problems like this? Check out this exercise.

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