Number Properties Flashcards

1
Q

Divisible by 2

A

Even

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2
Q

Divisible by 3

A

Sum of digits is divisible by 3

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3
Q

Divisible by 4

A

Divisible by 2 twice, or the last two digits are divisible by 4

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4
Q

Divisible by 5

A

Ends is 5 or 0

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5
Q

Divisible by 6

A

Divisible by 2 and 3

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6
Q

Divisible by 8

A

Divisible by 2 three times, or the last three digits are divisible by 8

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7
Q

Divisible by 9

A

Sum of digits is divisible by 9

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8
Q

Divisible by 10

A

Ends in 0

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9
Q

What is a factor?

A

A factor is a positive integer that divides evenly into an integer

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10
Q

What is a multiple?

A

Is the number formed by multiplying the number by another number

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11
Q

What is the founder foundation rule?

A

If A is a factor of B, and B is a factor of C, then A is a factor of C

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12
Q

What is a dividend?

A

The number being divided

8/5 (8 divided by 5)

8 is the dividend

Dividend = Quotient x Divisor + Remainder

or

Dividend = Multiple of Divisor + Remainder

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13
Q

What is a divisor?

A

The number that is dividing

8/5 (8 divided by 5)

5 is the divisor

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14
Q

What is a quotient?

A

The number of times that the divisor goes into the dividend completely (the whole number if the division contains a remainder)

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15
Q

Even +/- Even = ?

A

Even

“If they’re the same, the sum will be even. If they’re not the same, the sum will be odd”

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16
Q

Odd +/- Odd = ?

A

Even

“If they’re the same, the sum will be even. If they’re not the same, the sum will be odd”

17
Q

Even +/- Odd = ?

A

Odd

“If they’re the same, the sum will be even. If they’re not the same, the sum will be odd”

18
Q

Even x Even = ?

A

Even

“If one even number is present, the product will be even. If you only have odd numbers, the product wil be odd.”

Note: there are no rules for division

19
Q

Even x Odd = ?

A

Even

“If one even number is present, the product will be even. If you only have odd numbers, the product wil be odd.”

Note: there are no rules for division

20
Q

Odd x Odd = ?

A

Odd

“If one even number is present, the product will be even. If you only have odd numbers, the product wil be odd.”

Note: there are no rules for division

21
Q

-A x B x -C = Positive or Negative?

A

Negative

Odd number of negative signs means negative. An even number of negative signs means positive