b. A number is divisible by 8 if it is divisible by 4 and
divisible by 2.
Since 8 = 4x2, All numbers divisible by 8 are divisible by 4 and 2.
X/8 = X/(4*2)
To determine if a number is divisible by 8, you need to check if it is divisible by both 4 and 2. Here are the steps to follow:
1. Start with a given number.
2. Check if the number is divisible by 4. To do this, divide the number by 4 and check if the remainder is 0. If the remainder is 0, then the number is divisible by 4.
3. If the number is not divisible by 4, then it is not divisible by 8. You can stop here.
4. If the number is divisible by 4, continue to the next step.
5. Check if the number is divisible by 2. To do this, divide the number by 2 and check if the remainder is 0. If the remainder is 0, then the number is divisible by 2.
6. If the remainder is not 0, then the number is not divisible by 2 and therefore not divisible by 8. Stop here.
7. If both the remainder for dividing by 4 and dividing by 2 are 0, then the number is divisible by both 4 and 2, and therefore divisible by 8.
Following these steps will help you determine if a given number is divisible by 8 by checking if it is divisible by both 4 and 2.
To determine whether a number is divisible by 8, you need to check if it is divisible by both 4 and 2.
To check if a number is divisible by 4, you need to see if the last two digits of the number form a multiple of 4. If the last two digits are divisible by 4, then the entire number is divisible by 4. For example, if the last two digits of a number are 12, 24, 36, 48, 60, 72, 84, or 96, then the number is divisible by 4.
Once you have determined that the number is divisible by 4, you then need to check if it is divisible by 2. This can be done by checking if the last digit is even (ends in 0, 2, 4, 6, or 8). If the last digit is even, then the number is divisible by 2.
Therefore, if a number is divisible by 4 and divisible by 2 (i.e., the last two digits form a multiple of 4 and the last digit is even), then it is divisible by 8.
Try them out:
8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 88, 96 . . .