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Mathematics Composition of Grade Five in Primary School: Characteristics of Multiples of 4 and 9
Features of multiples of 4: The last two digits are multiples of 4, including the ending of 00. For example, 04, 16,124,2036,3500. Characteristics of multiples of 9: the sum of the numbers on each bit is a multiple of 9. Such as 18,36, 17 1, 2637,54018.