The development of academic achievement. Using a series of exercises of mathematics.The addition, subtraction, multiplication, and food grade, 1 integer.The purpose of this study was to: 1) study achievement of grade 1 students using set exercises additive. Subtraction, multiplication and integer through the percentage 60 2) to determine the efficiency of a series of exercises of mathematics on addition, subtraction, multiplication and integer. Grade 1 70 / 70 criteria were used, including students, 1 / 4 Number 39 people from purposive sampling. The data include Set exercises addition, subtraction, multiplication, and divide the integer. And the achievement test before school - after school on addition, subtraction, multiplication, division, integer analysis using statistics is the percentage. Mean, standard deviation, the confidence value and test value t.The results showed that the 1) the achievement of students learning by using a set 1 exercises addition, subtraction, multiplication, The students have passed the integer points were 70 35 people. A student score did not fit the criteria 4 people from all the students 39 people 2) efficiency of supplementary skills of mathematics on additive. Subtraction, multiplication and integer grade 1 criteria 70 / 70 set exercises instructor created effective criteria. The following is 90.45 / 75.13. "Key words (Key Word) achievement, a set of supplementary exercises
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