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# Prime and Composite Numbers 100s Charts and Posters

Rogue Algorithm
1.6k Followers
3rd - 5th
Subjects
Resource Type
Formats Included
• PDF
Pages
10 pages
Rogue Algorithm
1.6k Followers

### Description

Use these hundreds charts and posters to help your students learn the prime and composite numbers through 100 and remember the characteristics of prime and composite numbers, addressing one of the math standards in the Grade 4 Math Common Core State Standards

Math Common Core State Standards addressed –
4.OA.4 – Determine whether a given whole number in the range 1-100 is prime or composite.

Each chart contains definitions of prime and composite numbers, as well as an explanation of why the number 1 is neither prime nor composite. When learning prime and composite numbers, students often have difficulty remembering that 1 is not prime, so the number 1 is highlighted differently from the other numbers to emphasize its uniqueness.

Students also tend to over-generalize that all odd number are primes, understandable given that all prime numbers with the exception of 2 are odd. However, there are many composite odd numbers, and these charts can help address this commonly held misconception. Have students study highlight or circle all of the odd composite numbers on the chart. Your students will see that, while most composite numbers are even, there are many odd composite numbers!

Included in this chart pack are three concept posters and six different charts:

• color chart with the number 1 featured in a yellow circle, all prime numbers in red boxes, and all composite numbers in white boxes
• color chart with the number 1 featured in a yellow circle, all prime numbers in white boxes, and all composite numbers in blue boxes
• color chart with the number 1 featured in a yellow circle, all prime numbers in red boxes, and all composite numbers in blue boxes
• black-and-white chart with the number 1 featured in a gray circle, all prime numbers in gray boxes, and all composite numbers in white boxes
• black-and-white chart with the number 1 featured in a gray circle, all prime numbers in white boxes, and all composite numbers in gray boxes
• black-and-white chart with none of the numbers highlighted – use this one if you want the kids to identify and highlight all the prime and composite numbers themselves

For more practice, check out my Prime or Composite? task cards –

Prime or Composite? task cards + printables (set a) - Common Core Math-aligned
Prime or Composite? task cards + printables (set b) - Common Core Math-aligned

These posters and charts are also available in a bundle with both sets of task cards and printables in one package –

Prime or Composite? resource bundle - posters, charts, task cards, printables
Total Pages
10 pages
N/A
Teaching Duration
N/A
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