Mississippi Math 3.OA.7

Math3rd GradeOperations and Algebraic Thinking (OA) Represent and Solve Problems Involving Multiplication and Division

The Standard

Fluently multiply and divide within 100, using strategies such as the relationship between multiplication and division (e.g., knowing that 8 × 5 = 40, one knows 40 ÷ 5 = 8) or properties of operations. Know from memory all products of two one-digit numbers; and fully understand the concept when a remainder does not exist under division.

2025 Mississippi College- and Career-Readiness Standards for Mathematics · Multiply and Divide within 100

Teacher's field guide

What This Standard Means

What Students Need to Do: Students recall products of one-digit numbers and use those facts to multiply and divide within 100. They use equal groups or related facts to show when division leaves nothing over.
What Mastery Looks Like: A student recalls 7 × 8 = 56 without counting and uses it to solve 56 ÷ 8 = 7. They explain that seven groups of eight use all 56 items, with none left over.
Common Misconceptions: Students may give 6 as the answer to 42 ÷ 6 because they confuse the divisor with the number of groups. Some think every division problem must have a leftover.
How to Assess It: On an exit ticket, ask students to solve 7 × 8, 56 ÷ 7, and 54 ÷ 9. Have them write a multiplication fact that checks 54 ÷ 9 and state how many are left over.

Lesson moves

Ways to Teach It

Give pairs 24 counters and six paper cups; have them share the counters equally and write the matching multiplication and division facts.
Ask, “If you know 9 × 6 = 54, how can you find 54 ÷ 6, and why is nothing left over?”
Play fact-family match with cards showing products and related multiplication and division equations; students group the cards that belong together.
Show a grocery sign for 48 juice boxes packed eight per carton; students find the number of cartons and check with multiplication.

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