Arithmetic Flashcards

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1
Q

Internet

A

A while number. Negative it positive

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2
Q

Fraction

A

Integer divided by a non zero integer

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3
Q

Rational number

A

Number that can be written as a ratio of two numbers

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4
Q

Irrational numbers

A

Cannot be written as a ratio of two integer (resorting decimals or not perfect squares)

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5
Q

Absolute numbers

A

Distance from zero

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6
Q

Square root of 2

A

1.41

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7
Q

Square root of 3

A

1.73

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8
Q

Square root (a x b)

A

Square root a * square root b

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9
Q

Odd plus minus odd

Even plus minus even

A

Even

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10
Q

Odd plus minus even

A

Odd

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11
Q

Odd x odd

A

Odd

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12
Q

Even x even

Even x odd

A

Even

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13
Q

Divisible by 6

A

If divisbe by 2 and 3

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14
Q

Divisbe by 9

A

If the sum of it’s digits is divisible by 9

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15
Q

Divisible by 4

A

Divisible by 4 if the last two digits are divisible by 4 (like 1728)

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16
Q

Divisible by 7

A

If the difference of it’s units digit times 2 and the digits in the number is divisible by 7 (203 is divisible by 7 since 20-(3*2)=14)

17
Q

Divisible by 8

A

If last 3 digits are divisible by 8

18
Q

A^b * A^c

A

A^(b+c)

19
Q

A^b / A^c

A

A^(b-c)

20
Q

(A^b)^c

A

A^(bc)

21
Q

B^a * C^a

A

(BC)^a

22
Q

(Ab) ^ (.5)

A

(a)^.5. * (b)^.5

23
Q

(A/B) ^.5

A

(A)^.5/(B)^.5