CCSS.Math.Content.3.OA.A
The standard
Represent and solve problems involving multiplication and division.
Common Core State Standards for Mathematics
What this standard means
Students need to make sense of equal groups, arrays, and sharing situations. They should choose multiplication or division, write an equation with an unknown, and explain what each number means in the story.
Mastery looks like matching a situation to a model, solving accurately, and checking the answer in context. Students often mix up groups and items in each group, or treat division as only “make smaller” instead of finding group size or number of groups.
Ways to teach it
- Build arrays with counters for 4 by 6, 3 by 8, and 5 by 5, then write matching multiplication and division equations.
- Ask students to write a story problem for 24 ÷ 6, then trade papers and solve a partner’s problem.
- Show three word problems and have students hold up M or D cards to choose multiplication or division before solving.
- Use snack packs, table groups, or sports teams to model equal groups and fair shares from familiar classroom situations.
Plan a lesson for CCSS.Math.Content.3.OA.A
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Related standards
- CCSS.Math.Content.2.OA.A
Represent and solve problems involving addition and subtraction.
- CCSS.Math.Content.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 drawi...
- CCSS.Math.Content.1.OA.A
Represent and solve problems involving addition and subtraction.
- CCSS.Math.Content.5.NF.B.6
Solve real world problems involving multiplication of fractions and mixed numbers, e.g., by using visual fraction models or equations to represent the problem.