Math Vocabulary

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					  Math
Vocabulary

First Grade
Chapter 4
count on
to count forward
  from a given
     number

 3, 4, 5, 6, …
number line
A line marked with a
     sequence of
numbers at regularly
 spaced point along
      its length
  0   1   2   3   4   5   6   7   8
doubles
an addition fact that
includes two of the
   same number
      2 +2 = 4
     5 + 5 = 10
doubles plus one
   an addition fact
 whose two numbers
are next to each other
  on the number line
      2+3=5
      4+5=9

				
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