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3rd Grade Math
10. 3.NBT.A.1
10.1 Reading and Writing Digits
Reading and Writing Digits
Learn how to read large numbers, write numbers in words, and turn written numbers back into digits using place value periods.
What You'll Learn
Identify each digit's place value before grouping a number into periods to read it aloud
Apply commas to separate periods such as ones, thousands, and millions when writing large numbers
Convert a number written in words, such as four thousand two hundred six, into standard digit form
Recognize that the word and is used only around a decimal point, not between whole number periods
Use \( 2{,}506 = 2\times1000 + 5\times100 + 0\times10 + 6\times1 \) to check a written number against its digits
What You'll Practice
1
Completing number word endings for numbers up to 20
2
Writing full number words for two-digit numbers up to 99
3
Recognizing correct spellings of basic number words
Why This Matters
Reading and writing number words is essential for everyday tasks like writing checks, filling out forms, and understanding written instructions. This foundational skill connects math to literacy and helps you communicate numerical information clearly in real-world situations.
This Unit Includes
1 Video lesson
Practice exercises
Learning resources
Skills
Number Words
Number Recognition
Spelling
Place Value
Counting
OH Curriculum Aligned