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Features

Every lesson of the unit, in the same kinds of question as the test
Multiply by 10, 100 and 1,000, and by their multiples
Fill in area models for 2-, 3- and 4-digit numbers times a 1-digit number
Multiply with the standard algorithm, by a 1-digit number and 2 digits by 2 digits
Fill in a four-part area model, then multiply with partial products
Round each factor to estimate, and decide whether an answer is reasonable
Solve an equal groups story and a times as many story
The last question (3-digit times 2-digit) is for the states that teach it in 4th grade
Answer keys name the lesson and skill of every question

Skills Covered

Multiply by 10, 100 and 1,000 and their multiples
2-digit times 1-digit in an area model
3- and 4-digit times 1-digit by place value
The standard algorithm with a 1-digit number
2-digit times 2-digit in a four-part area model

Partial products and the standard algorithm
Round each factor to estimate a product
Is the answer reasonable?
Equal groups and times as many stories
3-digit times 2-digit (Florida)

How to Use This Pack

Two pages that go over the whole unit on multiplying multi-digit numbers, to do together the day before the test. Its 10 questions are the same kinds as the test's, in the same order, with other numbers, so no problem on the review is on the test. Question 10 (3-digit times 2-digit) is for the states that teach it, as on the test. 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. Ask students to estimate before they multiply, and to check their answer against the estimate. Leave out question 10 if your class does not learn it. 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 explain each step of the standard algorithm out loud, and to estimate first so they know about how big the answer should be.

Tips for Success

Think of 3 × 900 as 3 × 9 hundreds
Split each number by place value in an area model, then add the parts
In the second row of 2-digit times 2-digit, you multiply by tens
Estimate first, then check the answer against the estimate
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.B.5 Use the commutative, associative and distributive properties to multiply and divide, such as finding 7 × 8 from 7 × 5 and 7 × 3.
3.NBT.A.3 Multiply a single-digit number by a multiple of ten from 10 to 90, such as 4 × 70, using place value and properties.
3.MD.C.7c Use tiles or area models to show that splitting a rectangle's side into two parts splits its area into two products (the distributive property).
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.NBT.B.5 Multiply numbers up to 9,999 by one-digit numbers, and two-digit by two-digit numbers, with place-value strategies shown in equations, arrays or area models.
5.NBT.A.2 Explain why multiplying or dividing by 10, 100 or 1,000 adds zeros or moves the decimal point, and write powers of 10 with exponents.

4th Grade Multiplication Unit Review

4th Grade4th Grade Math Curriculum

A review of the unit on multiplying multi-digit numbers, to go over together the day before the test. Students multiply by 10, 100 and 1,000, fill in area models, use partial products and the standard algorithm, estimate to check and solve multiplication stories.

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What’s Included

A two-page review of every lesson in the unit (10 questions)
Answer keys that name each question's lesson and skill (4 pages in all)

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