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Features

  • Every lesson of the unit, in the order of the test
  • Comparison sentences and equations
  • A times as many story that finds the multiplier with a strip diagram, and one that divides
  • Factor pairs from a rectangle and in a T-chart
  • Skip count to find multiples, circle multiples of 3, and circle the prime numbers
  • The last two questions (facts with 11 and 12, and the greatest common factor) are for the states that teach them in 4th grade
  • Answer keys name the lesson and skill of every question

Skills Covered

  • Multiplication as comparison
  • Times as many stories with strip diagrams
  • Times as many or how many more?
  • Factor pairs from rectangles
  • Every factor pair of a number to 100
  • Multiples
  • Prime and composite numbers
  • Facts with 11 and 12, and the greatest common factor

How to Use This Pack

Two pages that go over the whole unit on times as many, factors and multiples, to do together the day before the test. Its 12 questions take the lessons in the test's order, with other numbers, and some ask a little differently: the first story finds how many times as many with a strip diagram, the rectangle shows one factor pair and asks for the other, and the multiples to circle are the 3s. Questions 1 to 10 are the Common Core lessons, and questions 11 and 12 (facts with 11 and 12, and the greatest common factor) are for the states that teach them. There is no Score line: it is practice, not a grade. The pre-check and the unit test are packs of their own.

In the Classroom

Do the review together the day before the test. Work a question, then let students try the next one on their own, and stop on any that trip up more than a few. Questions 11 and 12 are taught in 4th grade in some states only: leave them out if your class does not learn them. Factor pairs can be written in either order; the keys show one way. The keys name each question's lesson, so a question the class misses points to the lesson to go back to.

At Home

Use the review as practice before a test at school. Ask your child to say whether a story asks "how many more" or "how many times as many" before solving it.

Tips for Success

  • Draw the strip diagram before writing the equation
  • Ask "add or multiply?" for each comparison
  • List factor pairs starting from 1 so none are missed
  • Check a prime by trying to make a rectangle with more than one row
  • Go back to the lesson the key names for a question the class misses

Common Core Standards Alignment

This pack supports the following Common Core State Standards for Mathematics:

  • 3.OA.C.7 Multiply and divide to 100 fluently with strategies, and by year's end instantly recall every product of two single-digit numbers.
  • 4.OA.A.1 Read a multiplication equation as a comparison (24 = 3 × 8: 24 is 3 times as many as 8) and write comparisons as equations.
  • 4.OA.A.2 Multiply or divide to solve story problems that compare amounts (times as many), using drawings and equations, and tell them apart from comparing by adding.
  • 4.OA.B.4 For numbers 1 to 100, list factor pairs, spot multiples of one-digit numbers, and sort numbers into prime and composite.

© Copyright 2010. National Governors Association Center for Best Practices and Council of Chief State School Officers. All rights reserved.

4th Grade Factors and Multiples Unit Review

A review of the unit on times as many, factors and multiples, to go over together the day before the test. Students write comparisons as equations, solve times as many stories, find factor pairs and multiples, and circle primes.

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What’s Included

  • A two-page review of every lesson in the unit (12 questions)
  • Answer keys that name each question's lesson and skill (4 pages in all)
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