## Grade 4 Mathematics Module 3, Topic B: Multiplication by 10, 100, and 1,000

Classroom Resource Information

Title:

Grade 4 Mathematics Module 3, Topic B: Multiplication by 10, 100, and 1,000

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Content Source:

EngageNY
Type: Lesson/Unit Plan

Overview:

In Module 3, Topic B, students examine multiplication patterns when multiplying by 10, 100, and 1,000. Reasoning between arrays and written numerical work allows students to see the role of place value units in multiplication. Students also practice the language of units to prepare them for multiplication of a single-digit factor by a factor with up to four digits. Teachers also continue using the phrase “____ is ____ times as much as ____” (e.g., 120 is 3 times as much as 40). This carries forward multiplicative comparison from Topic A, in the context of area, to Topic B, in the context of both calculations and word problems.

Content Standard(s):
 Mathematics MA2019 (2019) Grade: 4 2. Solve word problems involving multiplicative comparison using drawings and write equations to represent the problem, using a symbol for the unknown number. Alabama Alternate Achievement Standards AAS Standard: M.AAS.4.1 Solve one-step word problems involving real-life situations using the four operations within 100 without regrouping and select the appropriate method of computation when problem solving. Mathematics MA2019 (2019) Grade: 4 11. Find the product of two factors (up to four digits by a one-digit number and two two-digit numbers), using strategies based on place value and the properties of operations. a. Illustrate and explain the product of two factors using equations, rectangular arrays, and area models. Alabama Alternate Achievement Standards AAS Standard: M.AAS.4.11 Add and subtract one and two-digit numbers up to 49 with regrouping using concrete manipulatives and visual models.
Tags: array, divide, multiplicative comparison, multiply, operations, place value, word problems
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