Unit 1 Math Vocabulary

Question 0

What is a number model?

Answer 0

A number sentence showing a math fact.

ex . 2 x 4=8

Question 1

What is a rectangular array?

Answer 1

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.

Question 2

What is a fact family?

Answer 2

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.

Question 3

What is a factor?

Answer 3

The numbers being multiplied together in any multiplication problem.

Question 4

What is a product?

Answer 4

The answer in any multiplication problem.

Question 5

What is a factor pair?

Answer 5

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

A number can have more than one factor pair.

Question 6

What does “divisible by” mean?

Answer 6

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.

Question 7

What are divisibility rules?

Answer 7

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

Question 8

What is a prime number?

Answer 8

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

Question 9

What is composite number?

Answer 9

A number with more than two factors.

Question 10

What is a square array?

Answer 10

A special rectangular array that is always a square.

Question 11

What is a square number?

Answer 11

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

Question 12

What is an exponent?

Answer 12

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

Question 13

What is exponential notation?

Answer 13

Any number written with an exponent.

Question 14

What is a square root?

Answer 14

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

Question 15

What is a factor rainbow?

Answer 15

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

Question 16

What is a factor string?

Answer 16

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.

Question 17

What is the length of a factor string?

Answer 17

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.

Question 18

What is prime factorization?

Answer 18

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

Question 19

What is a factor tree?

Answer 19

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