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 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.
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.
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.
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.
Find every pair, leave none behind
Fourth graders learn that factors are numbers you multiply to get a product. They find all the factor pairs for whole numbers up to 100, like 24 = 1 × 24, 2 × 12, 3 × 8, 4 × 6. They learn that a number is a multiple of each of its factors, and they sort numbers into prime (exactly two factors, like 7) and composite (more than two, like 12). The aha moment: kids notice that once the factor pairs start repeating in reverse, they have found them all!
Factors connect multiplication, division and number sense. These moves help 4th graders find them all, every time.
Give kids 12 square tiles and ask how many different rectangles they can build. Each rectangle shows a factor pair: 1 × 12, 2 × 6, 3 × 4. When a number like 7 only makes one long row, they have discovered a prime number with their own hands.
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 withJust the Factors WorksheetWorksheetsOpen it →A catchy prime numbers song helps kids remember the first primes and what makes a number prime. Play it as a warm-up for a week, then pause it and let kids fill in the next prime. Music makes the list stick.
Why it works: words set to a repeating melody are easier to recall than the same words spoken (Wallace, 1994).
Try it withPrime Numbers SongSongsOpen it →Mix factor questions with multiples and prime/composite questions in one short set. "Is 36 a multiple of 9? List the factors of 18. Is 21 prime?" Switching between related ideas helps kids see how they connect.
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 practice turns into a game fast. Here are some favorites.
WorksheetsPut a number in the middle of a flower and write a factor on every petal. Bonus points for a flower with no missing petals!
Open Factor Flowers Worksheet →
ActivitiesSolve multiplication facts on a sunny beach theme, then name the factors in each fact.
Open Fun at the Beach Multiplication Activity →
Test PrepCall out a number and kids stand up for prime, sit down for composite. Quick and noisy!
Open Smarter Balanced (CAASPP / SBAC) 4th Grade Math Practice Test Workbook →Teacher favorites right now: Florida FAST 4th Grade Math Practice Test Workbook, Prime Numbers Song and Just the Factors Worksheet.
Factors are the whole numbers you multiply together to get another number. The factors of 12 are 1, 2, 3, 4, 6 and 12.
Start with 1 and the number itself, then test 2, 3, 4 and so on. Stop when the pairs start repeating, because you have found them all.
Factors are numbers that multiply to make a number, and multiples are what you get when you multiply a number. 3 is a factor of 12, and 12 is a multiple of 3.
A prime number has exactly two factors: 1 and itself. Examples are 2, 3, 5, 7 and 11. The number 1 is not prime because it has only one factor.
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