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if the last two digits are lesser than 50 (e.g. 8634), you round down by making the last two digits 0 (in this case, 8600).If the last two digits are greater than 50 (e.g. 8662), you round up by adding 1 to the hundreds and making the last two digits 0 (in this case, 8700).If the last two digits are exactly 50, you can round up or down, your choice.
A number is divisible by 4 if the last two digits are divisible by 4.A number is divisible by 4 if the last two digits are divisible by 4.A number is divisible by 4 if the last two digits are divisible by 4.A number is divisible by 4 if the last two digits are divisible by 4.
Since there are two decimal digits, you divide 23 by 100 (102), and write it as 23/100.Since there are two decimal digits, you divide 23 by 100 (102), and write it as 23/100.Since there are two decimal digits, you divide 23 by 100 (102), and write it as 23/100.Since there are two decimal digits, you divide 23 by 100 (102), and write it as 23/100.
01.
If the last two digits of the integer are divisible by 4 then so is the whole number. ^^To tell if the last two digits are divisible by 4, you just need to know all the numbers up to 100. Personally, I just memorize 4, 8, 12, 16, and just add them to increments of 20 to check.