Mississippi Math 4.MD.1

Math4th GradeMeasurement and Data (MD) Solve Problems Involving Measurement and Conversion of Measurements from a Larger Unit to a Smaller Unit

The Standard

Know relative sizes of measurement units within one system of units including km, m, cm, mm; kg, g, mg; lb, oz.; l, ml; hr, min, sec. Within a single system of measurement, express measurements in a larger unit in terms of a smaller unit. Record measurement equivalents in a two-column table. For example, know that 1 ft is 12 times as long as 1in. Express the length of a 4 ft snake as 48 in. Generate a conversion table for feet and inches listing the number pairs (1, 12), (2, 24), (3, 36),…

2025 Mississippi College- and Career-Readiness Standards for Mathematics · Understand Decimal Notation for Fractions, and Compare Decimal Fractions

Teacher's field guide

What This Standard Means

What Students Need to Do: Students compare units used for length, weight, liquid volume, and time. They change measurements to smaller units and record matching amounts in a two-column table.
What Mastery Looks Like: A student knows that 1 pound equals 16 ounces and writes 3 pounds as 48 ounces. They fill a table for 1 through 4 pounds and explain why the number of ounces grows while the weight stays the same.
Common Misconceptions: Students may divide instead of multiply when changing to a smaller unit. They may also use 10 for every conversion, even though an hour has 60 minutes and a pound has 16 ounces.
How to Assess It: Ask students to make a two-column table showing 1, 2, 3, and 4 hours in minutes. Have them write how they found each number.

Lesson moves

Ways to Teach It

Give pairs a ruler to measure 1, 2, and 3 centimeters in millimeters, then record each pair in a table.
Ask partners to sketch one centimeter and explain in writing why 3 centimeters equals 30 millimeters, not 3 millimeters.
Play conversion bingo: show cards marked 120 minutes, 3,000 grams, and 48 inches, then call out 2 hours, 3 kilograms, and 4 feet.
Show a 2-liter drink bottle label and ask students how many milliliters it holds for a class drink order.

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