Florida B.E.S.T. MA.4.AR.3.1
The Standard
Determine factor pairs for a whole number from 0 to 144. Determine whether a whole number from 0 to 144 is prime, composite or neither.
Florida B.E.S.T. Standards for Mathematics
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students list positive whole-number pairs whose product equals a given number, using arrays, multiplication, or division. They use the factor pairs to classify numbers as prime, composite, or neither.
What Mastery Looks Like
- A student can list each factor pair once and know when the list is complete. They correctly classify numbers through 144 and explain why 0 and 1 are neither prime nor composite.
Common Misconceptions
- Students often confuse factors with multiples or stop before finding every pair. They may count reversed pairs twice, miss a square pair, call 1 prime, or call 0 composite.
How to Assess It
- Exit ticket: List every positive factor pair of 36. Then classify 36, 37, 1, and 0 as prime, composite, or neither and justify one answer.
Lesson moves
Ways to Teach It
Give pairs of students 36 square tiles and have them build every rectangular array, recording each row-by-column factor pair.
Ask students to write why 1 and 0 are neither prime nor composite, using definitions and one example of each number type.
Play Factor Pair Bingo: call a product, and students cover a factor pair on their boards after verifying the multiplication.
Plan seating for 48 guests by listing every equal-row arrangement, then decide whether 48 is prime or composite.
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Printable MA.4.AR.3.1 Worksheet
A ready-to-print activity worksheet aligned to MA.4.AR.3.1, with an answer key for the teacher on its own page. No account needed.
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Related Standards
- MA.3.AR.3.1
Determine and explain whether a whole number from 1 to 1,000 is even or odd.
- MA.3.NSO.2.2
Explore multiplication of two whole numbers with products from 0 to 144, and related division facts.
- MA.6.NSO.3.4
Express composite whole numbers as a product of prime factors with natural number exponents.
- MA.3.AR.3.2
Determine whether a whole number from 1 to 144 is a multiple of a given one-digit number.
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