Montana Math MT.3.MD.3

Math3rd GradeMeasurement and Data

The Standard

Draw a scaled picture graph and a scaled bar graph to represent a data set with several categories. Solve one- and two-step "how many more" and "how many less" problems using information presented in scaled bar graphs. This standard should incorporate cultural context relating to Montana Indigenous Peoples and local communities.

2026 Montana Mathematics Content Standards

Teacher's field guide

What This Standard Means

What Students Need to Do

Students draw picture graphs and bar graphs for data with several categories. They use a key or scale marked in twos to answer one-step and two-step comparison questions.

What Mastery Looks Like

A student labels each category, gives the picture graph a clear key, and marks the bar graph scale evenly. They read each mark as two and can add category totals before finding how many more or fewer.

Common Misconceptions

Students may count each picture or grid line as one, even when it stands for two. They may add two categories but forget to subtract to answer the question.

How to Assess It

Give students these sample vote counts: Crow Fair 6, county fair 8, library program 10, farmers market 12. Ask them to draw both graphs using twos, then find how many fewer votes the two fairs received than the other two events combined.

Lesson moves

Ways to Teach It

  1. Place 4, 6, 8, and 10 sample votes under Crow Fair, county fair, library program, and farmers market; draw both graphs by twos.

  2. Ask, 'How many fewer votes did the two fairs get than the other two events together?' Have students write both sums and the difference.

  3. Play graph detective: show a bar graph marked by twos and ask partners to find and fix one bar read as single votes.

  4. Read flyers for Crow Fair, a Crow Nation event, and a county fair; tally student questions about each and graph the counts.

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Printable MT.3.MD.3 Worksheet

Preview of the MT.3.MD.3 printable worksheet

A ready-to-print activity worksheet aligned to MT.3.MD.3, with an answer key for the teacher on its own page. No account needed.

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