Base 10 Blocks

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Base 10 Blocks

• Kris Smeester
• April 21, 2004

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What are Base 10 Blocks?

• Base 10 blocks are a way to represent numbers
  with blocks. Remember, there are different size
  blocks that can represent numbers. You can use a
  unit, a long, or a flat.
• unit long
  flat
  

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So, what do the blocks represent?

• Base 10 blocks show us how many units
  are included in each block.
• -A cube represents 1 unit.
• -A long is equal to 10 units.
• -A flat is equal to 100 units.

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How can we use Base 10 Blocks?

• We can use Base 10 Blocks in adding and
  subtracting numbers. Using Base 10 Blocks can
  make addition and subtraction much easier to
  understand. Lets look at some problems.

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Sample Addition Problem

• We can use Base 10 Blocks for Addition
• 25
• _____ _13_
• 38

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Sample Subtraction Problem

• We can also use Base 10 Blocks for subtraction
• 25
• -_ ____ -_ 13__
• 12

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Trading Base 10 Blocks

• Remember that when we have too many units, we
  have to trade them for a long.
• When we have 10 longs, we have to trade them for
  a flat.
• 
  

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Sample Trading Problem

• 
  
• 63
• ________ 43
• 106

• Remember, that when there are 10 longs, we
  must trade them for a flat. When subtracting, we
  can trade the flats in for longs, and the longs
  in for units. It is similar to carrying.

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Overview

• Now that we have learned what Base 10 Blocks
  are, we can take the quiz. If you need more help
  with Base 10 Blocks, here are some helpful sites
  that you may find interesting
• -Learning Base 10 Blocks- Learn how to trade Base
  10 blocks for numbers.
• -Counting Base 10 Blocks-Group the blocks
  together to make longs or flats.
• -Base 10 Block Practice-Click on the link to get
  practice using Base 10 Blocks.