Worksheet Grade 5 Math

Halstead Water Plant Log: A Grade 5 Unit Conversion Worksheet

A grade 5 worksheet where students convert liters, milliliters, hours, and minutes from a fictional water plant's pump log and compare tank sizes with decimals.

Grade: Grade 5
Subject: Math
Material: Worksheet
Time: 30 min
Prep: No prep
Materials: None

Standards

5.MD.A.1 Common Core Math

Convert among different-sized standard measurement units within a given measurement system (e.g., convert 5 cm to 0.05 m), and use these conversions in solving multi-step, real world problems.

How this material aligns: Items 1, 2, 3, 4, and 5 convert between liters and milliliters and between hours and minutes, and item 9 uses one of those conversions to decide whether two log entries record the same volume, the within-system unit conversions this standard requires.

All materials for 5.MD.A.1 →

5.NBT.B.7 Common Core Math

Add, subtract, multiply, and divide decimals to hundredths, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used.

How this material aligns: Item 3 multiplies the decimal 2.5, item 7 adds 4.75 and 3.6 to hundredths, and item 9 multiplies 0.5 by 1,000, practicing the decimal operations to hundredths that this standard names.

All materials for 5.NBT.B.7 →

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This material is in the public domain (CC0) and may be copied, edited, and shared freely, without attribution. Updated 2026-07-23.

Objectives

Students will convert between liters and milliliters and between hours and minutes.
Students will add decimal volumes and compare two tank sizes using division.
Students will explain why converting units makes a plant operator's report easier to read.

Vocabulary

Key words: convert, liter, milliliter, volume

Teacher overview

The fictional town of Halstead runs a small water plant. An operator there keeps a log of tank volumes, sample sizes, and how long each pump runs. To read the log clearly, the operator has to switch between liters and milliliters and between hours and minutes. This worksheet gives students the same conversions to practice, using 1 liter = 1,000 milliliters and 1 hour = 60 minutes. Show your work on every item.

Halstead Water Plant Log: A Grade 5 Unit Conversion Worksheet — Grade 5 Math

Name: ____________________________ Date: ______________

Student Worksheet

A tank holds 3,000 liters. Convert that to milliliters. (1 liter = 1,000 milliliters.)
A sample bottle holds 250 milliliters. Convert that to liters.
A beaker holds 2.5 liters. Convert that to milliliters.
A pump ran for 2 hours and 30 minutes. How many minutes did it run in all?
Another pump ran for 90 minutes. Convert that to hours.
On one day, a tank received 1,250 gallons in the morning and 1,875 gallons in the afternoon. How many gallons did it receive in all?
An operator measured 4.75 liters in one sample and 3.6 liters in another. How many liters is that together?
A big tank holds 12,000 liters. A small tank holds 3,000 liters. How many times as much water does the big tank hold as the small tank?
An operator wrote "0.5 L" for one sample and "500 mL" for another. Are these the same amount of water? Use the conversion to explain.
Why is it useful to change a large number of milliliters into liters when writing a plant report? Explain in one or two sentences.

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: 3,000,000 milliliters. 3,000 liters x 1,000 milliliters per liter = 3,000,000 milliliters.
Answer: 0.25 liters. 250 milliliters divided by 1,000 = 0.25 liters.
Answer: 2,500 milliliters. 2.5 liters x 1,000 = 2,500 milliliters.
Answer: 150 minutes. 2 hours x 60 = 120 minutes, plus 30 minutes, equals 150 minutes.
Answer: 1.5 hours. 90 minutes divided by 60 = 1.5 hours.
Answer: 3,125 gallons. 1,250 + 1,875 = 3,125 gallons received that day.
Answer: 8.35 liters. 4.75 + 3.6 = 8.35 liters together.
Answer: 4 times. 12,000 liters divided by 3,000 liters = 4, so the big tank holds 4 times as much.
Answer: Yes, they are the same. 0.5 liters x 1,000 = 500 milliliters, so 0.5 L and 500 mL are equal amounts of water.
Answer: Liters use fewer digits than milliliters for a large amount, so the report is shorter and easier to read and compare at a glance.

Differentiation

Support

Provide a place-value chart and a printed rule strip showing "liters x 1,000 = milliliters" and "minutes divided by 60 = hours." Allow a calculator, and start these students with items 1 through 5 before the decimal-addition items.

Extension

Ask students to write a short plant-log entry of their own with at least three measurements, then rewrite every measurement in a second unit (liters to milliliters, hours to minutes). Have a partner check that each converted value is correct.

ELL supports

Provide a visual glossary card showing a 1-liter bottle beside a 1,000-milliliter label and a clock face marked with 60 minutes for one hour. Allow students to answer items 9 and 10 with short phrases and the supporting arithmetic shown separately.