exercise Makes Perfect

Identify Prime and Composite Numbers

Some numbers, prefer (72), have plenty of factors. Other numbers, such as (7), have only 2 factors: (1) and also the number. A number with just two determinants is dubbed a prime number. A number with much more than two components is called a composite number. The number (1) is no prime no one composite. It has only one factor, itself.

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Definition: prime Numbers and also Composite Numbers

A element number is a counting number better than (1) who only factors are (1) and also itself.

A composite number is a counting number that is not prime.


Figure (PageIndex5) perform the counting numbers from (2) v (20) along with their factors. The emphasize numbers room prime, since each has actually only two factors.

This figure shows a table through twenty rows and also three columns. The first row is a header row. It labels the columns as “Number”, “Factor” and also “Prime or composite?” The 2nd row perform the number 2, in red, under the “Number” column, the numbers 1 and 2 under the “Factors” column and also the word element under the “Prime or Composite?” column. The 3rd row perform the number 3, in red, under the “Number” column, the numbers 1 and 3 under the “Factors” column and also the word element under the “Prime or Composite?” column. The 4th row perform the number 4 under the “Number” column, the numbers 1, 2 and 4 under the “Factors” column and the indigenous composite under the “Prime or Composite?” column. The 5th row lists the number 5, in red, under the “Number” column, the numbers 1 and 5 under the “Factors” column and also the word prime under the “Prime or Composite?” column. The 6th row lists the number 6 under the “Number” column, the number 1, 2, 3 and 6 under the “Factors” column and the native composite under the “Prime or Composite?” column. The seventh heat lists the number 7, in red, under the “Number” column, the numbers 1 and also 7 under the “Factors” column and the word element under the “Prime or Composite?” column. The eighth row lists the number 8 under the “Number” column, the number 1, 2, 4 and 8 under the “Factors” column and the word composite under the “Prime or Composite?” column. The ninth row list the number 9 under the “Number” column, the numbers 1, 3 and also 9 under the “Factors” column and also the word composite under the “Prime or Composite?” column. The tenth row lists the number 10 under the “Number” column, the numbers 1, 2, 5 and 10 under the “Factors” column and also the indigenous composite under the “Prime or Composite?” column. The eleventh row lists the number 11, in red, under the “Number” column, the number 1 and also 11 under the “Factors” column and the word element under the “Prime or Composite?” column. The twelfth row lists the number 12 under the “Number” column, the number 1, 2, 3, 4, 6 and 12 under the “Factors” column and the word composite under the “Prime or Composite?” column. The thirteenth heat lists the number 13, in red, under the “Number” column, the number 1 and 13 under the “Factors” column and also the word prime under the “Prime or Composite?” column. The fourteenth row lists the number 14 under the “Number” column, the number 1, 2, 7 and also 14 under the “Factors” column and also the native composite under the “Prime or Composite?” column. The fifteenth row lists the number 15 under the “Number” column, the number 1, 2, 3, 5 and 15 under the “Factors” column and the indigenous composite under the “Prime or Composite?” column. The sixteenth heat lists the number 16 under the “Number” column, the numbers 1, 2, 4, 8 and 16 under the “Factors” column and also the indigenous composite under the “Prime or Composite?” column. The seventeenth row lists the number 17, in red, under the “Number” column, the numbers 1 and 17 under the “Factors” column and the word element under the “Prime or Composite?” column. The eighteenth heat lists the number 18 under the “Number” column, the numbers 1, 2, 3, 6, 9 and 18 under the “Factors” column and the indigenous composite under the “Prime or Composite?” column. The nineteenth heat lists the number 19, in red, under the “Number” column, the number 1 and also 19 under the “Factors” column and also the word element under the “Prime or Composite?” column. The twentieth heat lists the number 20 under the “Number” column, the numbers 1, 2, 4, 5, 10 and also 20 under the “Factors” column and also the native composite under the “Prime or Composite?” column.What Does Maybe Mean From A Guy Says Maybe To Hanging Out? What Does A Guy Mean When He Says Maybe

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0 100 100
1 100 + 15 115
2 100 + 15 • 2 130
3 100 + 15 • 3
4 100 + 15 • <>
5 100 + <>
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20
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Banking In March, Gina opened up a Christmas club savings account at her bank. She deposit $75 to open up the account. Every week, she added $20 come the account. The table shows exactly how much money Gina had put in the account through the end of each week. Finish the table by filling in the blanks. mainly after opened the account Total variety of dollars Gina put in the account Simplified complete
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1 75 + 20 95
2 75 + 20 • 2 115
3 75 + 20 • 3
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Writing Exercises

If a number is divisible by 2 and also by 3, why is it additionally divisible by 6? What is the difference in between prime numbers and also composite numbers?