Mrs. Kalal
StMaryofGostynSchool
2011 - 2012 Class Schedule
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We made it through the first trimester! Good job, everyone! Things to continue working on: Fractions Integers Math Facts - ten minutes a day WILL make a big difference! Divisibility Rules A number is divisible by: 2 – if it is even (the last number has to end in 0, 2, 4, 6, or 8) EX: 512 3 – if the sum of the numbers is divisible by 3 EX: 681 -> 6 + 8 + 1 =15 and 3 goes into 15 evenly, so it will go into 681 also. 4 – if the number formed by the last 2 numbers is divisible by 4 EX: 716 5 – if the number ends in 5 or 0 EX: 315 6 – if it is divisible by BOTH 2 and 3 EX: 738 (ends in an even number and 7 + 3 + 8 = 18, which is divisible by 3) 9 – if the sum of the digits is divisible by 9 EX: 207 > 2 + 0 + 7 = 9, and 9 goes into 9 evenly 10 – if the number ends in a zero EX: 340
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