
NATURAL NUMBERS 
T1.1: Fourth Grade Natural Numbers Test (1.1)
Most of the questions are typical. Questions 4, 10, 17 and 18 deserve special attention.
Questions 19, 20 and 22 are relatively hard and 25 is rather "deep thinking" oriented. 
T1.2: Fourth Grade Natural Numbers Test (1.2)
Questions 1, 2, 3 and 11 deserve special attention.
Questions 8 and 16 are relatively hard . 
T1.3: Natural Numbers Test (Fourth Grade 1.3)
This is a rather hard nut for 4th Grade. Questions 6, 7, 13 and 22 deserve special attention.
Questions 1, 2, 8, 11 and 16 are relatively hard and rather "deep thinking" oriented. 




DIVISION 
T1.1: Division of Natural Numbers Test, 4th Grade 1.1
This is a simple test. Base 10 coding and place values are continuously emphasized. Questions 6, 9, 11 (divisibility by 3)
and 22 are relatively hard. Correct order of operations is given. 
T1.2: Division of Natural Numbers Test, 4th Grade 1.2
This is a moderate test. The first 5 questions are about limited digit calculations, errors made due to limit and ways of
correcting them if a calculator at hand. Question 11 (divisibility by 5) is reletively hard but interseting. Last three questions are also interesting. 
T1.3: Division of Natural Numbers Test, 4th Grade 1.3
This is a rather hard nut for 4th Grade. Questions 1, 2, 3 , 13, 14 and 16 are there for the comparison of our usual method
of division and explicit forms (base 10 coding) of the numbers and divisions in this form. They deserve special attention. Questions 7 , 12 and 25 (an
interesting "division + ..." problem) are hard. 








