Whole numbers through 99 can be interpreted as groups of ten and remaining ones: ten ones make one ten, and a numeral’s tens digit tells how many groups of ten while its ones digit tells how many individual units remain, including zero ones. Ten-frames, base-ten representations, and numerals make this unit structure visible and support composing and decomposing numbers; larger place-value units and numbers beyond 99 are not included.
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- Learn “Identify groups of ten and ones” with a detailed explanation of the concept
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Detailed Explanation: Identify groups of ten and ones
A whole number can be made of groups of ten and ones left over.
- The tens digit tells how many groups of ten.
- The ones digit tells how many individual ones.
Example: How many tens and ones are in ?
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Look at the tens digit:
In , the tens digit is .
So, there are 3 groups of ten. -
Look at the ones digit:
The ones digit is .
So, there are 6 ones. -
Put the parts together:
So, has 3 tens and 6 ones.
Learn by doing: Identify groups of ten and ones
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Practice:
Base 10 Blocks - Counting - Number to Picture, Tens and Ones
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Download/Modify Free Grade 1 'Identify groups of ten and ones' Worksheet
Print this free 'Identify groups of ten and ones' worksheet to practice this skill away from the computer. Click 'Modify' to easily customize this worksheet to your exact needs.
This Worksheet Includes:
- Base 10 Blocks - Counting - Number to Picture, Tens and Ones
- Base 10 Blocks - Counting - Places to Picture - Tens and Ones
- Base 10 Blocks - Counting - Picture to Number - Tens and Ones
- Words to Number Equivalents - Power of Ten
Units Teaching This Skill
These adaptive units introduce, teach, or reinforce this skill (Identify groups of ten and ones) through scaffolded problems that grow in difficulty as concepts are understood.