-has one left over when counted by 2s -numbers that end with 1, 3, 5, 7, 9

-using the same addend over and over (3+3+3=9)

-count objects in equal groups of two or more (5+5=10 +5=15 +5=20)

-each group has the same number of objects

-can be counted by 2s -numbers that end with 0, 2, 4, 6, 8

-objects arranged in rows and columns

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1st Grade Math vocab

McGraw-Hill math vocab for first grade

Term	Definition
odd numbers	-has one left over when counted by 2s -numbers that end with 1, 3, 5, 7, 9
repeated addition	-using the same addend over and over (3+3+3=9)
skip count	-count objects in equal groups of two or more (5+5=10 +5=15 +5=20)
equal groups	-each group has the same number of objects
even	-can be counted by 2s -numbers that end with 0, 2, 4, 6, 8
array	-objects arranged in rows and columns