Worksheet Grade 3 Math

Clearview Creek Testing Day: A Grade 3 Multiplication Worksheet

A grade 3 worksheet where students multiply equal groups of 2-liter jars to find how much creek water a fictional testing team collected at four sites.

Grade: Grade 3
Subject: Math
Material: Worksheet
Time: 30 min
Prep: No prep
Materials: None

Standards

3.OA.A.1 Common Core Math

Interpret products of whole numbers, e.g., interpret 5 x 7 as the total number of objects in 5 groups of 7 objects each. For example, describe a context in which a total number of objects can be expressed as 5 x 7.

How this material aligns: Items 1, 3, and 8 ask students to interpret a multiplication expression as equal groups of sample jars, exactly the array interpretation of products this standard specifies.

All materials for 3.OA.A.1 →

3.MD.A.2 Common Core Math

Measure and estimate liquid volumes and masses of objects using standard units of grams (g), kilograms (kg), and liters (l). Add, subtract, multiply, or divide to solve one-step word problems involving masses or volumes that are given in the same units, e.g., by using drawings (such as a beaker with a measurement scale) to represent the problem.

How this material aligns: Every item measures or combines liter amounts from the testing team's jars, addressing this standard's one-step liquid-volume word problems.

All materials for 3.MD.A.2 →

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This material is in the public domain (CC0) and may be copied, edited, and shared freely, without attribution. Updated 2026-07-16.

Objectives

Students will interpret a multiplication expression as equal groups of liters in identical sample jars.
Students will multiply and add liter amounts to find totals collected across several test sites.
Students will explain why a testing team collects samples from more than one location along a creek.

Vocabulary

Key words: water testing, sample, site, equal groups

Teacher overview

Suppose a class water-testing club visits Clearview Creek, a fictional creek used for this worksheet, and stops at four different sites along its length to check whether the water looks and smells healthy. At each site, the team fills several identical jars, and every jar holds the same amount of water, which makes this worksheet a natural place to practice multiplication as equal groups while learning why testers sample more than one spot along a creek.

Clearview Creek Testing Day: A Grade 3 Multiplication Worksheet — Grade 3 Math

Name: ____________________________ Date: ______________

Student Worksheet

Every jar holds 2 liters of water.

At Site 1, the team fills 3 jars. Write a multiplication fact. Then solve it.
At Site 2, the team fills 5 jars. How many liters is that?
What does 3 × 2 mean here? What do the 3 and the 2 stand for?
At Site 3, the team fills 4 jars. How many liters is that?
At Site 4, the team fills 6 jars. How many liters is that?
Add the liters from all four sites.
Which site has the most water? Which has the least? What is the difference?
Draw an array (rows and columns) for 6 groups of 2. This matches Site 4.
Why must every jar hold the same amount of water? Why does this matter for a fair test?
Why test four sites on one creek instead of just one?

From Water for Schools (waterforschools.org). This material is in the public domain (CC0) and may be copied, edited, and shared freely.

Answer Key

Answer: 6 L. 3 × 2 = 6.
Answer: 10 L. 5 × 2 = 10.
Answer: The "3" stands for the number of equal groups, which is 3 jars, and the "2" stands for how many liters are in each group, or each jar. The product, 6, is the total liters across all 3 jars together.
Answer: 8 L. 4 × 2 = 8.
Answer: 12 L. 6 × 2 = 12.
Answer: 36 L. 6 + 10 + 8 + 12 = 36.
Answer: Site 4 collected the most (12 L) and Site 1 collected the least (6 L); the difference is 6 L. 12 − 6 = 6.
Answer: An array with 6 rows and 2 columns (or 6 columns of 2), showing 12 total liters, matches Site 4's 6 jars of 2 liters each.
Answer: Filling every jar to the exact same amount makes the comparison between sites fair, since any difference in the total liters collected comes only from the number of jars filled, not from some jars being fuller than others.
Answer: Answers will vary, but should note that testing several spots along the creek gives a fuller picture of the creek's health, since conditions can be different in one part of a creek than another, and a single site might not represent the whole creek.

Differentiation

Support (below grade level)

Provide a drawn picture of jars grouped by site (for example, three circles labeled "2 L" each for Site 1) so students can count total liters by skip-counting before writing the multiplication equation. Reduce the worksheet to items 1, 2, 4, 5, 6, and 7.

Extension (above grade level)

Have students design a fifth site with a number of jars they choose themselves, write the multiplication equation for that site's total, and then recalculate the four-site total from item 6 to include the new site.

ELL supports

Pre-teach "sample," "site," and "equal groups" using a simple picture of jars set out along a drawn creek line. Allow item 3 to be answered by labeling a drawn array instead of writing a full sentence.