This study aims to determine: ( 1 ) the types
of mistakes students make; and ( 2 ) the factors that
caused the mistakes of fifth grade students of SD
Manukan Wetan 1 Surabaya in solving the calculation
operation problems in the division of decimal fractions .
The subjects in this study were class V as many as 29
people, and the subjects interviewed consisted of 3
people. The results showed that the types of errors and
the factors causing errors made by students in solving
the problem of decimal fraction division are as follows:
Types of conceptual errors, the causal factors namely
Factors causing the errors are: ( 1) Subjects have not
been able to apply the meaning of division to the
fractions of 29 people student test takers, there are
around 12 students or 41.38% who make mistakes. ( 2 )
Complete the completion operation. Of the 29 students
who took the test, there were about 14 students or 48 ,
97 % made mistakes. (3 ) Turn ordinary fractions into
decimal fractions / Determine the final result. Of the 29
students who took the test, there were about 20 people
or 69 , 66 % made mistakes.
Keywords : Error Analysis , Division of Decimal Fractions.