Tell whether each number is divisible by 2, 3, 4, 5, 8, 9, or 10. Some numbers may be divisible by more than one number. 1.324
2.840
3.2,724
4.81,816
5.7,848
i don't get it
To determine whether a number is divisible by another number, you need to check if the first number can be divided evenly (without a remainder) by the second number. Here's how you can check divisibility for each of the given numbers:
1. 1.324:
- Divisible by 2: No (It’s not an even number because it ends with a decimal point and a non-zero digit after it).
- Divisible by 3: No (Sum of its digits, 1 + 3 + 2 + 4, is 10, which is not divisible by 3).
- Divisible by 4: No (The last two digits, 24, are not divisible by 4).
- Divisible by 5: No (It does not end with 0 or 5).
- Divisible by 8: No (The last three digits, 324, are not divisible by 8).
- Divisible by 9: No (The sum of its digits, 1 + 3 + 2 + 4, is 10, which is not divisible by 9).
- Divisible by 10: No (It does not end with 0).
2. 840:
- Divisible by 2: Yes (It's an even number because it ends with 0).
- Divisible by 3: Yes (The sum of its digits, 8 + 4 + 0, is 12, which is divisible by 3).
- Divisible by 4: Yes (The last two digits, 40, are divisible by 4).
- Divisible by 5: Yes (It ends with 0).
- Divisible by 8: Yes (The last three digits, 840, are divisible by 8).
- Divisible by 9: No (The sum of its digits, 8 + 4 + 0, is 12, which is not divisible by 9).
- Divisible by 10: Yes (It ends with 0).
3. 2,724:
- Divisible by 2: Yes (It's an even number because it ends with 4).
- Divisible by 3: Yes (The sum of its digits, 2 + 7 + 2 + 4, is 15, which is divisible by 3).
- Divisible by 4: Yes (The last two digits, 24, are divisible by 4).
- Divisible by 5: No (It does not end with 0 or 5).
- Divisible by 8: No (The last three digits, 724, are not divisible by 8).
- Divisible by 9: No (The sum of its digits, 2 + 7 + 2 + 4, is 15, which is not divisible by 9).
- Divisible by 10: No (It does not end with 0).
4. 81,816:
- Divisible by 2: Yes (It's an even number because it ends with 6).
- Divisible by 3: Yes (The sum of its digits, 8 + 1 + 8 + 1 + 6, is 24, which is divisible by 3).
- Divisible by 4: Yes (The last two digits, 16, are divisible by 4).
- Divisible by 5: No (It does not end with 0 or 5).
- Divisible by 8: Yes (The last three digits, 816, are divisible by 8).
- Divisible by 9: Yes (The sum of its digits, 8 + 1 + 8 + 1 + 6, is 24, which is divisible by 9).
- Divisible by 10: No (It does not end with 0).
5. 7,848:
- Divisible by 2: Yes (It's an even number because it ends with 8).
- Divisible by 3: Yes (The sum of its digits, 7 + 8 + 4 + 8, is 27, which is divisible by 3).
- Divisible by 4: Yes (The last two digits, 48, are divisible by 4).
- Divisible by 5: No (It does not end with 0 or 5).
- Divisible by 8: Yes (The last three digits, 848, are divisible by 8).
- Divisible by 9: No (The sum of its digits, 7 + 8 + 4 + 8, is 27, which is not divisible by 9).
- Divisible by 10: Yes (It ends with 0).
I have checked the divisibility of each number based on common divisibility rules.
Why are you repeating this question ?
It was answered in detail yesterday ....
https://www.jiskha.com/display.cgi?id=1505338640
Did you not read the replies ?