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Dividing by 7 (2 Tests)
- Take the last digit in a number.
- Double and subtract the last digit in your number from the rest of the digits.
- Repeat the process for larger numbers.
- Example: 357 (Double the 7 to get 14. Subtract 14 from 35 to get 21 which is divisible by 7 and we can now say that 357 is divisible by 7.
NEXT TEST
- Take the number and multiply each digit beginning on the right hand side (ones) by 1, 3, 2, 6, 4, 5. Repeat this sequence as necessary
- Add the products.
- If the sum is divisible by 7 - so is your number.
- Example: Is 2016 divisible by 7?
- 6(1) + 1(3) + 0(2) + 2(6) = 21
- 21 is divisible by 7 and we can now say that 2016 is also divisible by 7.
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∙ 13y ago
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What number do you divide by 7 and the remainder is 3?
When you divide 24 by 7 the remainder is 3.
How many weeks are there 840 hours?
Just divide the number of hours by 24, to get the number of days. Then, divide the number of days by 7, to get the number of weeks. You can also divide the number of hours directly by (24 x 7).
How do you check if a large number is prime or a composite number?
You divide the number by 2. If the number is able to divide WITHOUT a remainder, then it is a prime number. If you divide a number by 1, you will get the same number. That is not a prime number.
What times 7 equal to 843?
This can be rephrased as 7 times x = 843 where'x' is the number to be found. If we divide 843 by 7 we get 120.429 To check: 120.429 x 7 = 843.003 which is just about 843
What number do you divide by 10 to get 7?
70 ÷ 10 = 7
Is 677 divisble by 3?
Nope... to check if a number will divide by 3 - add the digits of the number together. In this case, 6+7+7=20, which will not divide exactly by three.
How can you check if 7 is a factor of 291?
Divide 7 into 291. If it comes out evenly, it's a factor. It doesn't, so it's not.
What number do you divide by 7 and the remainder is 3?
When you divide 24 by 7 the remainder is 3.
How many weeks are there 840 hours?
Just divide the number of hours by 24, to get the number of days. Then, divide the number of days by 7, to get the number of weeks. You can also divide the number of hours directly by (24 x 7).
What number can you divide into 7000000000?
7
When you divide this number by 7 you get an answer of 10r6 what is the number?
76
How do you check if a large number is prime or a composite number?
You divide the number by 2. If the number is able to divide WITHOUT a remainder, then it is a prime number. If you divide a number by 1, you will get the same number. That is not a prime number.
What times 7 equal to 843?
This can be rephrased as 7 times x = 843 where'x' is the number to be found. If we divide 843 by 7 we get 120.429 To check: 120.429 x 7 = 843.003 which is just about 843
What number do you divide by 10 to get 7?
70 ÷ 10 = 7
How do i check if 7 is a multiple of 72?
Just divide 7 into 72 and if there is a remainder then it is not a multiple of 7.
How do you divide a lower number by a higher number example 5 divide by 7?
0.7143
What number do you divide by 8 to get 7?
56
