A ten is understood as a unit composed of ten ones, so it can be exchanged for 10 individual ones without changing the quantity; this relationship can be shown with place-value blocks, drawings, or equations such as . This equivalence supports regrouping when adding or subtracting whole numbers, while decomposing hundreds or developing more general base-system concepts is outside this scope.
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Detailed Explanation: Decompose a ten into ones
A ten is the same as 10 ones:
When you decompose a ten, you trade one ten for 10 individual ones. The amount stays the same.
Example: Decompose 14.
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Write 14 as 1 ten and 4 ones:
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Trade the 1 ten for 10 ones:
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Add the new 10 ones to the 4 ones:
So, 14 can be shown as:
The number is still 14 because you only exchanged one ten for the 10 ones that make up that ten.
Learn by doing: Decompose a ten into ones
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Practice:
Base 10 Blocks - Subtracting - Picture to Answer, With Borrow - Tens and Ones
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Download/Modify Free Grade 2 'Decompose a ten into ones' Worksheet
Print this free 'Decompose a ten into 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 - Subtracting - Picture to Answer, With Borrow - Tens and Ones
- Subtraction - Whole Number 2 x 1 - Columns, With Borrow
- Base 10 Blocks - Decompose and Compare - Tens to Ones
- Base 10 Blocks - Subtracting - Picture to Equation, With Borrow - Tens and Ones
- Base 10 Blocks - Counting - Places to Picture - Tens and Ones
- Base 10 Blocks - Counting - Number to Picture, Tens and Ones
- Base 10 Blocks - Counting - Picture to Number - Tens and Ones
- Base 10 Blocks - Counting - Word to Picture, Tens and Ones
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