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That all depends upon what the first digit is.

For example:

First digit is 1. Answer is: 8

First digit is 2. Answer is 16.

First digit is 3. Answer is 24.

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Q: What is the first digit multiplied by 8?

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625×2=1250

1155

1

504 = 8 x 9 x 7

2 digit number

Related questions

If 8 x divisor is 2 digit, divisor must be 12 or less If fist digit quotient x divisor is 3 digit, the first digit has to be 9 and the divisor is 12 9 x 12 = 108 8 x 12 = 96

625×2=1250

1349

1155

1

-1 1/3

The first 8 digit number is 10,000,000, the last is 99,999,999 which means there are 90,000,000 8 digit numbers

504 = 8 x 9 x 7

14.75

If the first digit is 9, you have 9 options (0-8) for the second digit. If the first digit is 8, you have 8 options (0-7) for the second digit. Etc. This leaves you with the arithmetic series: 0 + 1 + 2 + 3 + ... + 9.

2 x 6 + 0 = 12 2 x 1 + 2 = 4 4 is not [divisible by] 8, so 60 is not divisible by 8. (The remainder when 60 is divided by 8 is 4). To test divisibility by 8: Add together the hundreds digit multiplied by 4, the tens digit multiplied by 2 and the units (ones) digit. If this sum is divisible by 8 so is the original number. (Otherwise the remainder of this sum divided by 8 is the remainder when the original number is divided by 8.) If you repeat this sum on the sum until a single digit remains, then if that digit is 8, the original number is divisible by 8 otherwise it gives the remainder when the original number is divided by 8 (except if the single digit is 9, in which case the remainder is 9 - 8 = 1).

2 digit number

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