Grade 4 Lesson plan
Barrowgate's Mill Row Water Main: Pipe Sections and Remainders
A grade 4 lesson in the fictional town of Barrowgate where students divide a water main's length by pipe-section length and decide what each remainder means.
Common Core Math · Grade 4
4.NBT.B.5 Multiply multi-digit whole numbers
Multiply a whole number of up to four digits by a one-digit whole number, and multiply two two-digit numbers, using strategies based on place value and the properties of operations. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.
Why water teaches this standard well
Students multiply a hose's gallons-per-minute flow rate by the number of minutes it ran to find the total gallons delivered, modeling the multiplication with an area diagram. This is the same multiplication structure behind every flow-times-time calculation an operator performs.
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.
31 materials aligned to 4.NBT.B.5
Lesson plans
Grade 4 Lesson plan
Bricklow Dam's Power Log: Multiplying and Rounding Big Totals
A grade 4 lesson at a fictional hydropower dam where students multiply hourly output by hours run, then round four-digit totals for the daily report.
Grade 4 Lesson plan
Wardlow Reservoir's Hot Week: Water Lost to the Air
A grade 4 lesson on evaporation from a fictional reservoir, where students multiply daily losses across a week and round the totals for a town report.
Grade 4 Lesson plan
The Water Hiding in Your Lunch: A Grade 4 Food and Farms Lesson
A grade 4 lesson where students use two published farm-water estimates and multiplication to figure the unseen water in a cookout menu, then compare food choices.
Grade 4 Lesson plan
Foxglove Farm's Irrigation Gate: Two-Step Multiplication Problems
A grade 4 lesson where students multiply a two-digit flow rate by minutes, then by days, to find how many gallons an irrigation gate delivers to a farm field each week.
Worksheets
Grade 4 Worksheet
Portwick Camp's Wash Station Drain Field: Checking Two Designs
A grade 4 worksheet checking two gravel drain field designs for a fictional camp wash station against a creek setback, a gravel depth rule, and a token limit.
Grade 4 Worksheet
Ottercomb Isle's Water Barge: Sharing, Filling, and Rounding
A grade 4 worksheet where students divide a fictional island barge's daily fresh-water output among villages and tanks, interpret remainders, and round totals.
Grade 4 Worksheet
Redgrove's Hydrant Flushing Day: Gallons and Minutes
A grade 4 worksheet where students multiply flow rate by minutes open for four fictional fire hydrants, then compare, total, and plan the crew's schedule.
Grade 4 Worksheet
Marrowick Cleaning Ponds: Multiplying Microbe Feeding Batches
A grade 4 worksheet at a fictional water cleaning pond, where students multiply paddle turns, tray scoops, and daily barrel totals and interpret a remainder.
Grade 4 Worksheet
Ravenwood Water District's Well Pump Fill-Time Worksheet
A grade 4 worksheet at a fictional water district where students multiply and divide whole numbers to find gallons pumped and how long tanks take to fill.
Grade 4 Worksheet
Planning Tanager's Water Tower Mural: A Grid Math Worksheet
A grade 4 art-math worksheet where students size a water tower mural from a design grid, converting units and figuring paint, cost, and painting time.
Grade 4 Worksheet
Riverside Elementary's Rain Barrel: Liters, Milliliters, and Minutes
A grade 4 worksheet using a school rain barrel to practice converting liters to milliliters and hours to minutes, plus multi-digit multiplication of collection totals.
Math problem sets
Grade 4 Math problem set
Vinefield Orchard's Water Haul: Tank Trips and Tree Blocks
Ten grade 4 problems on hauling water to a fictional orchard during a pipe repair, ending with a choice between a trailer plan and a truck plan on time and cost.
Grade 4 Math problem set
Culvermere Marsh Mussel Beds: Multiplying Gallons Filtered
A grade 4 problem set about two fictional freshwater mussel beds, where students multiply, add, and divide to find how much marsh water the mussels filter.
Grade 4 Math problem set
Shepton Village's Pipe Order: Sections, Bundles, and Workdays
A grade 4 problem set where students divide a fictional village's pipe replacement into 6-foot sections, order bundles, and interpret a leftover remainder.
Grade 4 Math problem set
Ashford Pump Station: Gallons and Minutes Multiplication
A grade 4 problem set at the fictional Ashford pump station, using multi-digit multiplication to find total gallons pumped from a flow in gallons per minute.
Grade 4 Math problem set
Sample Bottles on the Lantwick Water Testing Route
Ten grade 4 problems following a fictional town's weekly water sampling route, multiplying bottles, tests, and miles and converting milliliters and minutes.
Grade 4 Math problem set
Turnbull Meter Route: Multiplying and Dividing House Counts
A grade 4 problem set following a fictional water meter technician's route, multiplying houses per street and dividing a route total across a work week.
Grade 4 Math problem set
Filling the Ashgrove Water Tank: Pump Flow Word Problems
Eight multiplication and division word problems built around a fictional town's water pump, ending with a challenge problem where a full tank meets a leak.
Grade 4 Math problem set
Granite Falls Treatment Plant: Pumping, Dividing, and Rounding Gallons
A grade 4 math set where students multiply a pump's flow rate by minutes and days, divide totals among tanks, and round results for a fictional plant's report.
Grade 4 Math problem set
Winding Creek Water Testing Team: Sampling and Shipping Problems
A grade 4 math problem set where a fictional student water-testing team multiplies sites by bottles and visits, then divides samples among shipping cases with remainders.
Classroom activities
Grade 4 Classroom activity
Grindley Lift Station Cards: Area Models for Pump Totals
A grade 4 card activity where teams pair a pump card with a run-time card for four fictional sewer lift stations and build area models to find total gallons.
Grade 4 Classroom activity
Leak Patrol: A Drip-Count Station Rotation at Carrigan School
A grade 4 station rotation where groups turn one-minute drip counts from five fictional school fixtures into hourly totals and rank the worst leak.
Grade 4 Classroom activity
Birchwood Cleaning Steps: A Wastewater Plant Station Rotation
A grade 4 station-rotation activity where students move through five steps of a fictional wastewater plant, solving a multiplication card at each stop.
Grade 4 Classroom activity
Rushlight Creek Sampling Route: A Six-Station Rotation
A grade 4 activity where teams rotate through six creek sampling stations, then use a printed site log to total bottles and minutes and pack coolers.
Grade 4 Classroom activity
Amber Hollow Farm's Watering Rounds: Flood vs. Drip Simulation
A grade 4 hands-on activity where teams simulate flood and drip irrigation on a fictional farm field, multiplying and comparing totals to explore water conservation.
Grade 4 Classroom activity
Larkspur Storm Drain Brigade: A Timed Litter-Removal Relay
A grade 4 relay activity where teams race a storm timer to clear litter tokens from model storm drains, multiplying totals and dividing a team's haul with a remainder.
Quizzes & test questions
Grade 4 Quiz & test questions
Calderbrook Mill Waterwheel: A Paddle Design Review Quiz
A grade 4 quiz on choosing among three model waterwheel paddle designs, using a test table of turns, lifted washers, and supply-token costs.
Grade 4 Quiz & test questions
Dunmoral's New Wells or a Shared Pipe: A Grade 4 Costs Quiz
A grade 4 quiz on a fictional town choosing between drilling its own wells and buying water from a neighbor, mixing benefit-and-cost items with multiplication.
Grade 4 Quiz & test questions
Hobbsville Public Works Quiz: Storm Drains and Plant Pumps
A 30-point grade 4 quiz on a fictional public works week, mixing unit conversion choices, multi-digit multiplication, rounding, and short written answers.
Grade 4 Quiz & test questions
Hazel Ridge Water Systems Unit Test: Pumping, Trips, and Conversions
A grade 4 unit test on a fictional town's water system, mixing multiple-choice, short-answer, and computation items on multiplication, division, and unit conversion.