Grade 5 Lesson plan
Three Hills Above Havershill: Choosing a Water Tank Site
A grade 5 lesson where students test three hilltop sites for a fictional town's water tank against height, pipe length, and storage rules using decimal subtraction.
Common Core Math · Grade 5
5.NBT.B.7 Add, subtract, multiply, and divide decimals to hundredths
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.
Why water teaches this standard well
Students add and subtract decimal gallon readings from a water meter to find a household's usage between two billing dates, then multiply by a per-gallon rate to check the bill total. Hundredths-place precision here matches the decimals printed on an actual water bill.
Materials tagged with this code are written to the full standard , and each carries a written note explaining the alignment. See how we review materials.
44 materials aligned to 5.NBT.B.7
Lesson plans
Grade 5 Lesson plan
Tannerly Orchard's Drip Lines: Where a Peach Tree's Mass Comes From
A grade 5 science lesson where students weigh evidence that a peach tree is built from air and water, then multiply decimals to compare drip and flood watering.
Grade 5 Lesson plan
Marlford Pump Station Wet Well: A Grade 5 Volume Lesson
A 50-minute grade 5 lesson in which students find a fictional pump station's wet well volume by adding two rectangular prisms, then convert it to gallons.
Grade 5 Lesson plan
Trestlebank Dam Gauge Log: A Grade 5 Decimal Division Lesson
A 50-minute grade 5 lesson using a fictional dam's daily staff-gauge readings to subtract decimals to hundredths and divide a total drop over equal days.
Grade 5 Lesson plan
The Mossgrove Operator's Daily Log: A Grade 5 Decimal Lesson
A 45-minute grade 5 careers lesson where students act as trainee plant operators and add, subtract, and multiply decimals from a fictional daily log.
Grade 5 Lesson plan
Alder Grove Rain Garden: A Grade 5 Runoff Sizing Lesson
A grade 5 engineering lesson where students use the roof-runoff formula to size a rain garden for Alder Grove Elementary and decide whether it can hold a storm's water.
Grade 5 Lesson plan
Larkspur Water Tower: A Grade 5 Steady-Pressure Design Lesson
A grade 5 engineering lesson where students design a model water tower for Larkspur Elementary and calculate its rectangular tank storage in cubic feet and gallons.
Grade 5 Lesson plan
Castlebrook Day Camp's Hydration Tank: Volume in Gallons
A grade 5 lesson in which students find the volume of a fictional camp's water tanks in cubic feet and convert those cubic feet into gallons.
Grade 5 Lesson plan
The Danner Family's Three-Day Emergency Water Supply
A grade 5 consumer lesson in which students plan a fictional family's three-day emergency water supply, converting quarts to gallons and working with decimals.
Grade 5 Lesson plan
Redbank Cove Beach Advisory: Rain Totals and Safe Swimming
A grade 5 health lesson in which students add and compare decimal rainfall totals to decide whether a fictional town's swimming beach stays open after a storm.
Grade 5 Lesson plan
Grimsholt Settling Basins: A Grade 5 Missing Dimension Lesson
A 45-minute grade 5 lesson using a fictional village's settling basins to find a missing length or depth from a required volume, then convert cubic feet to gallons.
Grade 5 Lesson plan
Ingleside's Midnight Meter Check: Finding a Hidden Leak
A 50-minute grade 5 lesson where students subtract 1:00 a.m. and 4:00 a.m. meter readings from two Ingleside streets to find which one hides a leak.
Grade 5 Lesson plan
The Delmont Bond Vote: Paying for a New Water Plant
A grade 5 civics lesson where the town of Delmont votes on borrowing money for a new water plant, and students compute each household's share of the cost.
Grade 5 Lesson plan
Ridgeline Fire Station's Backup Water Tank: A Grade 5 Volume Lesson
A 45-minute grade 5 lesson in which students find the volume of two rectangular water tank designs for a fictional fire station and convert cubic feet to gallons.
Grade 5 Lesson plan
Reading a Family's Water Meter: A Grade 5 Consumer Skills Lesson
A 45-minute grade 5 lesson that pairs decimal subtraction and division on realistic water meter readings with a short discussion of hydration.
Worksheets
Grade 5 Worksheet
Glenray's Well Field in a Dry July: A Water Level Worksheet
Students subtract decimals to find the drawdown at four wells in a fictional town, then explain how a summer watering rule protects the gravel aquifer below.
Grade 5 Worksheet
Harkaway Landing Trash Boom: A Grade 5 Decimal Worksheet
A grade 5 worksheet adding, subtracting, multiplying, and dividing decimals using four weeks of trash weights from a fictional river boom's haul log.
Grade 5 Worksheet
The Kettleboro Water-Savings Plan: A Conservation Careers Worksheet
A grade 5 careers worksheet where students act as a water conservation specialist and use decimals to find how many gallons the Delgado family can save.
Grade 5 Worksheet
Bottle Labels for the Fernwick Field Trip: Milliliters to Liters
A grade 5 worksheet in which students convert bottle labels from milliliters to liters and back while planning drinking water for a fictional class field trip.
Grade 5 Worksheet
Dunmore's Rooftop Cistern: A Grade 5 Tank Volume Worksheet
A grade 5 worksheet where students find the volume of a fictional family's rainwater cistern in cubic feet and gallons and compare two tank designs for a dry summer.
Grade 5 Worksheet
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 5 Worksheet
Hollowford Filtration Plant: A Grade 5 Decimal Logbook Worksheet
Grade 5 students add, subtract, multiply, and divide decimals to hundredths using a fictional water treatment plant operator's weekly chemical logbook.
Grade 5 Worksheet
Paper Plates or Washed Dishes: Costs at the Weldon Breakfast
A grade 5 economics worksheet where students compare the money, water, trash, and time costs of paper plates or washing dishes at a fictional town's pancake breakfast.
Grade 5 Worksheet
Cedarhurst Apartments' Water Meter: A Grade 5 Decimal Worksheet
A grade 5 worksheet where students subtract, add, multiply, and divide decimal water-meter readings from a fictional apartment building to track usage and find a leak.
Grade 5 Worksheet
Hazelmoor's Rain Garden Test Kit: A Grade 5 Unit Conversion Worksheet
A grade 5 worksheet converting cups, quarts, and gallons of captured rain-garden runoff, then using decimal multiplication to total a week of samples.
Math problem sets
Grade 5 Math problem set
Bramcote Water Works Leak List: A Grade 5 Repair Choice Set
Ten grade 5 problems converting quarts and pints to gallons so a fictional town's crew can rank three leaks and assign its one long-lasting repair.
Grade 5 Math problem set
Stannerly School Playground: A Grade 5 Runoff Volume Set
Nine grade 5 problems comparing a sealed mat and a porous pad for a fictional playground, using decimal volume work to pick the surface that meets a limit.
Grade 5 Math problem set
A Day of Flow at the Lissenden Water Reclamation Plant
A grade 5 decimal problem set following one day at a fictional wastewater plant, from the screen baskets through the settling tank to the weight of solids removed.
Grade 5 Math problem set
Sorrelton School Garden: A Grade 5 Sprinkler or Drip Decision
A grade 5 problem set where students test a sprinkler and a drip line against a school garden's water allowance, watering slot, and budget, then recommend one.
Grade 5 Math problem set
Elmswick Lot Storage Crates: A Grade 5 Volume Problem Set
A grade 5 problem set counting unit cubes and applying V = l x w x h to the buried stormwater crates under a fictional town's community center lot.
Grade 5 Math problem set
Trainee Operator at Pennwick: A Basin Volume Problem Set
A grade 5 careers math set where students act as trainee plant operators and find the volume of rectangular treatment basins in cubic feet and gallons.
Grade 5 Math problem set
Corrowdale Reclamation Plant Solids Log: A Grade 5 Decimal Set
A grade 5 problem set adding, subtracting, multiplying, and dividing decimals using a fictional water reclamation plant's weekly log of dried solids.
Grade 5 Math problem set
Elkhorn's Copper Basin Tanks: A Grade 5 Reservoir Volume Set
A grade 5 problem set where students find the volume of a fictional plant's rectangular storage tanks in cubic feet and gallons and combine tank volumes as water is used.
Grade 5 Math problem set
Ashcott's Drain Screens: A Grade 5 Fair Test Problem Set
A grade 5 problem set weighing debris and drain times from four storm drain screen trials in a fictional town, including one trial that was not a fair test.
Grade 5 Math problem set
Tracking Amber Falls Reservoir Through a Dry Summer
A grade 5 math problem set graphing a reservoir's daily water level during a dry summer on a coordinate grid and finding each day's decimal drawdown.
Grade 5 Math problem set
Sizing Granite Bluff Elementary's Flood-Control Detention Basin
A grade 5 math problem set that finds the volume of a rectangular detention basin in cubic feet, converts to gallons, and checks its storage capacity.
Grade 5 Math problem set
Riverbend Farm's New Drip Line: A Grade 5 Conversion Problem Set
An 8-problem grade 5 set where students compute roof runoff at a fictional farm, convert gallons to quarts, and use a fill rate to plan a new drip irrigation line.
Grade 5 Math problem set
Meadow Creek Elementary's Rain Cistern: Volume and Decimal Problems
A grade 5 math set on a school rainwater cistern, applying rectangular-prism volume, gallon conversion, decimal operations, and coordinate-plane graphing.
Labs & experiments
Grade 5 Lab / experiment
Covered or Open: Tracking Tap Water Chlorine at Wintercress
A grade 5 health lab in which students store tap water three ways, track its chlorine with test strips for a day, and graph the readings to set a storage rule.
Grade 5 Lab / experiment
Fenmere Orchard Mulch Depth: A Grade 5 Water-Saving Fair Test
Teams weigh three soil cups over two days to find whether thin or thick mulch holds water better, then recommend a ring depth for a fictional orchard.
Classroom activities
Grade 5 Classroom activity
Springvale Reservoir Balance Relay: A Grade 5 Decimals Game
A grade 5 relay activity where teams add and subtract decimal water-level changes to track a fictional reservoir's balance over one month station by station.
Quizzes & test questions
Grade 5 Quiz & test questions
Thackeray Mill Dam Fish Ladder: A Grade 5 Design Choice Quiz
A grade 5 quiz on two fish ladder designs for a fictional mill dam, mixing multiple choice, decimal computation, and a written design recommendation.
Grade 5 Quiz & test questions
Brookhaven's Storage Tank: A Grade 5 Volume and Decimals Quiz
A grade 5 quiz mixing multiple-choice, short-answer, and computation items on rectangular tank volume and decimal tank readings for a fictional town.
Grade 5 Quiz & test questions
Culverdale Pump House: A Grade 5 Measurement and Volume Quiz
A 20-point grade 5 quiz mixing multiple-choice, computation, and short-answer items on volume, metric conversion, and decimals at a fictional village pump house.