Podcast
Questions and Answers
A number is divisible by 7 if the number formed by the last three digits is divisible by ______.
A number is divisible by 7 if the number formed by the last three digits is divisible by ______.
8
A number is divisible by 9 if the sum of its digits is divisible by ______.
A number is divisible by 9 if the sum of its digits is divisible by ______.
9
It can be divided by at least one (1) other number (a ______) other than itself.
It can be divided by at least one (1) other number (a ______) other than itself.
factor
A number is divisible by 10 if its last digit is ______.
A number is divisible by 10 if its last digit is ______.
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The ______ common divisor of two or more integers is the largest non-zero integer that divides them.
The ______ common divisor of two or more integers is the largest non-zero integer that divides them.
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A number is divisible by 11 if the difference between the sum of one set of alternate digits and the sum of the other set of alternate digits is ______ or divisible by 11.
A number is divisible by 11 if the difference between the sum of one set of alternate digits and the sum of the other set of alternate digits is ______ or divisible by 11.
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A number is divisible by 12 if it is divisible by both ______ and ______.
A number is divisible by 12 if it is divisible by both ______ and ______.
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Prime ______ is a way to find which prime numbers multiply together to make the original number.
Prime ______ is a way to find which prime numbers multiply together to make the original number.
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The ______ common multiple of two or more integers is the smallest integer that is a common multiple of all the given integers.
The ______ common multiple of two or more integers is the smallest integer that is a common multiple of all the given integers.
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A ______ number is a positive integer greater than 1 that cannot be divided by any number except itself and 1.
A ______ number is a positive integer greater than 1 that cannot be divided by any number except itself and 1.
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The number 24 can be expressed as ______ x 2 x 2 x 3.
The number 24 can be expressed as ______ x 2 x 2 x 3.
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Let k be a positive integer greater than ______.
Let k be a positive integer greater than ______.
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The divisibility rule for 2 is that the last digit of the number is _______.
The divisibility rule for 2 is that the last digit of the number is _______.
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The divisibility rule for 3 is that the _______ of the digits is divisible by 3.
The divisibility rule for 3 is that the _______ of the digits is divisible by 3.
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The divisibility rule for 4 is that the number formed by the last two _______ is divisible by 4.
The divisibility rule for 4 is that the number formed by the last two _______ is divisible by 4.
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The divisibility rule for 5 is that the last digit is _______ or 5.
The divisibility rule for 5 is that the last digit is _______ or 5.
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The divisibility rule for 6 is that it is divisible by _______ and it is divisible by 3.
The divisibility rule for 6 is that it is divisible by _______ and it is divisible by 3.
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To find out if 7 divides n, take the last digit, _______ it, and subtract it from the rest of the number.
To find out if 7 divides n, take the last digit, _______ it, and subtract it from the rest of the number.
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