A Florida FAST 4th grade math practice test workbook for teachers, with a pretest, skill practice for all 39 benchmarks, mixed review and 2 full-length practice tests. Answer key included, so test prep is ready to go.
This greatest common factor worksheet gives 5th grade students four factor-list items and two word problems, with an answer key included, so they can master GCF before simplifying fractions.
This Just the Factors worksheet gives 4th grade students six numbers to factor completely plus two word problems, with a full answer key, so factor practice is ready to print and hand out.
This Blank Greatest Common Factor Worksheet lets 5th graders list factors, sort them into Venn diagrams, and find the GCF of three number pairs. An answer key is included for quick checking.
A Smarter Balanced (CAASPP / SBAC) 4th grade math practice test workbook for teachers, with a pretest, skill practice for all 38 standards, mixed review and 2 full-length practice tests. Answer key included, so test prep is ready to go.
This fun at the beach multiplication activity for 4th-5th grade has students match word problems, tape diagrams, and comparison statements, with a practice page and answer key included.
This factor flowers worksheet has 4th graders write eight factors on each flower's petals, list the factor pairs, and solve a garden word problem. An answer key is included for quick checking.
A NJSLA-A 4th grade math practice test workbook for teachers, with a pretest, skill practice for all 30 standards, mixed review and 2 full-length practice tests. Answer key included, so test prep is ready to go.
Every number has a secret family
Factors are the numbers you multiply together to make another number. The factors of 12 are 1, 2, 3, 4, 6, 12 because 3 × 4 = 12, 2 × 6 = 12 and 1 × 12 = 12. Kids usually meet factor pairs in 4th grade, where they find all the factors of numbers up to 100 and sort numbers into prime and composite. A prime number, like 7, has exactly two factors: 1 and itself. By 6th grade, they use factors to find the greatest common factor of two numbers. The click moment comes when a child realizes multiplication facts are a key that unlocks factor pairs instantly.
Factors make sense when kids can see the rectangles hiding inside a number. These moves show them.
Give kids 12 square tiles and ask, "How many different rectangles can you make?" They will find 1 by 12, 2 by 6 and 3 by 4. Each rectangle is a factor pair. Then try 7 tiles and watch them discover there is only one: that is a prime!
Why it works: the U.S. Department of Education's guide for teaching elementary math recommends moving from hands-on objects to drawings to numbers.
Try it withFactor Flowers WorksheetWorksheetsOpen it →Play the prime numbers song a couple of times, then pause it and let kids name the next prime. Music helps them remember the first primes, and those come in handy when they are hunting for factors.
Why it works: a catchy, repeating tune gives the brain a hook to hang words on, so sung text is remembered better (Wallace, 1994).
Try it withPrime Numbers SongSongsOpen it →Do not save factors for one unit. Mix factor pair questions into your regular math review with multiplication and multiples. Switching between problem types helps kids decide which strategy fits, just like on a real test.
Why it works: mixing different kinds of problems in one practice set helped students do far better on a later test (Rohrer and Taylor, 2007).
Try it withFlorida FAST 4th Grade Math Practice Test WorkbookAssessmentsOpen it →Factor games that make multiplication feel fresh.
ActivitiesToss a beach ball and whoever catches it names a factor pair for the number on their hand.
Open Fun at the Beach Multiplication Activity →
WorksheetsFind every factor of a mystery number and prove you did not miss one.
Open Just the Factors Worksheet →
WorksheetsList the factors of two numbers and circle the biggest one they share.
Open Greatest Common Factor Worksheet →Teacher favorites right now: Florida FAST 4th Grade Math Practice Test Workbook, Prime Numbers Song and Greatest Common Factor Worksheet.
A factor is a number that divides evenly into another number. For example, 3 is a factor of 15 because 3 × 5 = 15.
Start with 1 and the number itself, then test 2, 3, 4 and so on. Each time a number divides evenly, write it and its partner. Stop when the pairs start repeating.
Factors go into a number, and multiples come out of it. The factors of 6 are 1, 2, 3 and 6, while the multiples of 6 are 6, 12, 18, 24 and on forever.
Kids usually learn factor pairs and prime and composite numbers in 4th grade. Greatest common factor usually comes in 6th grade.
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