Montana Math MT.3.OA.7

Math3rd GradeOperations and Algebraic Thinking

The Standard

Flexibly, accurately, and efficiently multiply and divide within 100, using strategies such as the relationship between multiplication and division.

2026 Montana Mathematics Content Standards

Teacher's field guide

What Students Need to Do: Students multiply and divide with answers and products within 100. They use known facts, equal groups, and related equations instead of counting every object.
What Mastery Looks Like: A student finds 7 × 8 by combining 5 × 8 and 2 × 8 to get 56. They then use 7 × 8 = 56 to explain why 56 ÷ 8 = 7.
Common Misconceptions: Students may add the factors and say 6 × 8 = 14. They may subtract 8 from 56 once instead of finding how many groups of 8 make 56.
How to Assess It: Ask students: Find 7 × 8 and 56 ÷ 8. Show how your first answer helps you find the second.

Lesson moves

Give students 48 counters to make six equal rows, then ask them to write matching multiplication and division equations.
Ask students to write two ways to find 6 × 9 without counting by ones, then explain which way they would use.
Play fact-family match with cards showing 8 × 7, 56 ÷ 8, and 56 ÷ 7, and have students explain each match.
Put 72 pencils into boxes of 8, and have students find the number of boxes using a known multiplication fact.

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$Preview of the MT.3.OA.7 printable worksheet$

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