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Kindergarten · Place Value

Tens and ones to 20 (blocks)

Base-ten blocks show numbers: a flat is 100, a rod is 10, a little cube is 1.

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How to do it

  1. Count the flats: that many hundreds.
  2. Count the rods: that many tens.
  3. Count the cubes: that many ones. Write the digits in order.

Worked example

4 tens and 7 ones
40 + 7
47

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No rods means a 0 in the tens place.

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