Array with Group Size Unknown Problems (Full video) (Math Strategy)

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Array with Group Size Unknown Problems (Full video)

UnboundEd

Description: Students solve an Array with Group Size Unknown problem using a Level 3 multiplication and division strategy to make an easier problem, and explain their answers

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Aligned Standards

Equal Groups with Number of Groups Unknown Problems (Full video)

1 Content Standard is aligned with this strategy

3.OA.D.8

Major StandardsSupporting StandardsAdditional Standards

Standard 3.OA.D.8

Solve two-step word problems using the four operations. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding (This standard is limited to problems posed with whole numbers and having whole-number answers; students should know how to perform operations in conventional order when there are no parentheses to specify a particular order; Order of Operations).

Part of Major Cluster 3.OA.D

Prerequisites for 3.OA.D.8

2nd Grade

2.OA.A.1

Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.

3rd Grade

3.OA.A.3

Use multiplication and division within 100 to solve word problems in situations involving equal groups, arrays, and measurement quantities, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.

Upcoming Standards for 3.OA.D.8

4th Grade

4.OA.A.3

Solve multistep word problems posed with whole numbers and having whole-number answers using the four operations, including problems in which remainders must be interpreted. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding.

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