Unit 1 Math Vocabulary Flashcards

0
Q

What is a number model?

A

A number sentence showing a math fact.

ex . 2 x 4=8

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1
Q

What is a rectangular array?

A

An arrangement of objects into rows and columns.
Each row has the same number of objects,and each column has the same number of objects.
This represents a multiplication fact.

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2
Q

What is a fact family?

A

There are four related facts in each fact family,all using the same three numbers.
In multiplication/division fact families there are two multiplication and two division facts.
In an addition/subtraction fact family there are two addition and two subtraction facts.

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3
Q

What is a factor?

A

The numbers being multiplied together in any multiplication problem.

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4
Q

What is a product?

A

The answer in any multiplication problem.

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5
Q

What is a factor pair?

A

A pair of factors that can be multiplied to equal a number.

A number can have more than one factor pair.

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6
Q

What does “divisible by” mean?

A

When a whole number is divided by another whole number and the quotient is a whole number.
Then, the number is the first whole number is divisible by the second whole number.

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7
Q

What are divisibility rules?

A

The rules which show what number can be divisible by another number.

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8
Q

What is a prime number?

A

A number that has only two factors,the number itself and one.
All prime numbers are odd except for two.

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9
Q

What is composite number?

A

A number with more than two factors.

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10
Q

What is a square array?

A

A special rectangular array that is always a square.

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11
Q

What is a square number?

A

A number that is a product of a number being multiplied by itself.

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12
Q

What is an exponent?

A

It indicates the number of times a number is multiplied by itself.

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13
Q

What is exponential notation?

A

Any number written with an exponent.

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14
Q

What is a square root?

A

The name of a number that you get when you unsquare a number

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15
Q

What is a factor rainbow?

A

In a factor rainbow,the product of each connected factor pair should be equal to the number that the rainbow is representing.

16
Q

What is a factor string?

A

A name for a number written as a product or two or more factors.
In a factor string you cannot use the number 1 as a factor.

17
Q

What is the length of a factor string?

A

The length of a factor string is equal to the number of factors in a factor string.
The longest factor string for a number is made up of prime numbers.

18
Q

What is prime factorization?

A

Prime factorization is a factor string made up of prime numbers.
It is always the longest string for a number.

19
Q

What is a factor tree?

A

An easy way to find all the prime factors of a number.
First,write the number
2⃣4⃣
Then,underneath write any factor pair of the number.
2⃣4⃣
↙ ↘
6⃣ 4⃣
Then keep going until you get prime numbers.
2⃣4⃣
↙ ↘
6⃣ 4⃣
↙↘ ↙↘
2⃣ 3⃣ 2⃣ 2⃣
This proves the prime factorization of 24 is 2^3x3