# 33 Standard Form

Kris Elvin O'Brien

**Definition: **

A number written with one digit for each place value.

Source: Cavanaugh, M.C. (2006). *Math to Know: A mathematics handbook*. Great Source.

Photo source: http://www.classroomconfetti.com/2017/07/free-anchor-charts-for-back-to-school.html

Standard form is the simplest, most common way to write a number. You see numbers written in standard form everywhere. Each digit in standard form represents a value so we know what the number is worth. For example, the number 832 has 8 in the hundreds place, 3 in the tens place and 2 in the ones place, so we say eight hundred thirty-two. Do you notice how long it would take to write it out using words? Can you imagine trying to add numbers when they are written in long form? It would be confusing! It’s much easier to write 832.

Now you try. What is four hundred fifty-three written in standard form? Did you write 453? Good!

What is eighteen plus twenty written in standard form?

18 + 20 is much easier to add in standard form. What is the answer? Did you come up with 38? Great! Now try the next one. What did you get adding 57 + 13?

**18**** + 20 = 38**

**57**** + 13 = ??**

Click on this link to watch a short video from Underwater Math to learn more about how to write numbers in standard form.

Writing Numbers in Standard Form

Click on this link to watch a short video from Math Songs by NUMBEROCK to learn more about how to write numbers in standard, expanded, and word form.

Writing Numbers in Standard, Expanded and Word Form

Here is an interactive game you can use to review Expanded and Standard Form:

Standard and Expanded Number Forms Interactive Game

References:

Cavanaugh, M.C. (2006). *Math to Know: A mathematics handbook*. Great Source.

Rachel. (2017, July 23). *Free Anchor Charts For Back To School, Number Sense Anchor Charts*. Classroom Confetti. http://www.classroomconfetti.com/2017/07/free-anchor-charts-for-back-to-school.html

Underwater Math (2022, October 24). *Standard Place Value Form – 2nd Grade* [Video]. YouTube. https://youtu.be/ZUbyOWPl8RY?si=cTFxGTfnVyYvRFxD

Math Songs by NUMBEROCK. (2022, August 15). *Expanded Form, Word, and Standard Form Song by NUMBEROCK* [Video]. YouTube. https://youtu.be/qeAVXeETETI?si=wb_STzEwzg5s00UQ

Dkwalker. (2018). *Match Up Math: Expanded, Word and Standard Form*. Worldwall.net. https://wordwall.net/resource/21684624/math/math-expanded-word-and-standard-form