Number Names First grade second grade third grade Are you in grade 1 2 or 3 4 first second third When we put numbers in order we change their names 1 2 and 3 are called first second and third 5 We add th to most of the numbers after 1 2 and 3 6 1st 6th 3rd 2nd 4th 5th 8th 7th 9th 10th Four is fourth Five is fifth 7 
