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Divisibility by 4 and 8. The divisibility rules for 4 and 8 are as follows: 4- a number is divisible by 4 if the last two digits are divisible by 4 8-

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Presentation on theme: "Divisibility by 4 and 8. The divisibility rules for 4 and 8 are as follows: 4- a number is divisible by 4 if the last two digits are divisible by 4 8-"— Presentation transcript:

1 Divisibility by 4 and 8

2 The divisibility rules for 4 and 8 are as follows: 4- a number is divisible by 4 if the last two digits are divisible by 4 8- a number is divisible by 8 if the last three digits are divisible by 8 Ex. Determine whether the number is divisible by 4 and 8. Solution: The last 2 digits are 52 52/4=13 The last 3 digits are / The number is divisible by 4 but not 8

3 Example #1 Determine whether the number is divisible by 4 or 8 Solution: The last 2 digits are 56 56/4= 14 The last 3 digits are 256/8= 32 Therefore, 4 and 8 are factors

4 Your turn Explain whether 72 is divisible by 4 72/4=18 Yes

5 Practice Page 18 #1 Stop and Check Continue onto #3, 4, 5, 8, 9


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