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Measurement and data

Estimating mass

Learn
Metric system: units of weight
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Choose pounds or ounces to measure weight
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U.S. customary units: weight
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Practice
Estimate mass (grams and kilograms)Get 3 of 4 questions to level up!
Estimating mass (ounces and pounds)Get 3 of 4 questions to level up!

Estimating volume

Learn
Metric system: units of volume
(Opens a modal)
U.S. customary units: fluid volume
(Opens a modal)
Practice
Estimate volume (milliliters and liters) Get 3 of 4 questions to level up!
Estimating volume (cups, pints, quarts, and gallons)Get 3 of 4 questions to level up!

Estimating length

Learn
Metric system: units of distance
(Opens a modal)
U.S. customary units: distance
(Opens a modal)
Practice
Estimating length (mm, cm, m, km)Get 3 of 4 questions to level up!
Estimating length (in, ft, yd, and mi)Get 3 of 4 questions to level up!

Time

Learn
Finding reasonable unit of measurement example
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Time differences example
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Time word problem: puzzle
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Time word problem: travel time
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Practice
Estimating time (seconds, minutes, and hours)Get 3 of 4 questions to level up!
Time differencesGet 3 of 4 questions to level up!
Telling time word problemsGet 3 of 4 questions to level up!

Converting units of mass

Learn
How to convert kg to mg and T to oz
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Converting pounds to ounces
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Metric units of mass review (g and kg)
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US Customary units of weight review (oz & lb)
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Practice
Convert to smaller units (g and kg)Get 3 of 4 questions to level up!
Convert to smaller units (oz and lb)Get 3 of 4 questions to level up!

Converting units of volume

Learn
Convert liters to milliliters
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Converting US customary units of volume
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Metric units of volume review (L and mL)
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US Customary units of volume review (c, pt, qt, & gal)
(Opens a modal)
Practice
Convert to smaller units (mL and L)Get 3 of 4 questions to level up!
Convert to smaller units (c, pt, qt, & gal)Get 5 of 7 questions to level up!

Converting units of length

Learn
Converting metric units of length
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Converting feet to inches
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Converting yards into inches
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Metric units of length review (mm, cm, m, & km)
(Opens a modal)
US Customary units of length review (in, ft, yd, & mi)
(Opens a modal)
Practice
Convert to smaller units (mm, cm, m, & km)Get 5 of 7 questions to level up!
Convert to smaller units (in, ft, yd, & mi)Get 5 of 7 questions to level up!

Converting units of time

Learn
Converting units of time
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Time word problem: travel time
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Time word problem: Susan's break
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Converting units of time review (seconds, minutes, & hours)
(Opens a modal)
Practice
Convert to smaller units (sec, min, & hr)Get 5 of 7 questions to level up!
Time conversion word problemsGet 3 of 4 questions to level up!

Money word problems

Learn
Word problem: making change
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Currency conversion word problem
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Practice
Convert money word problemsGet 3 of 4 questions to level up!

Conversion word problems

Learn
Multi-step unit conversion examples (metric)
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Multi-step unit conversion examples (U.S. Customary)
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Practice
Metric conversions word problemsGet 3 of 4 questions to level up!
US customary conversion word problemsGet 3 of 4 questions to level up!

Area and perimeter

Learn
Area & perimeter word problem: dog pen
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Area & perimeter word problem: table
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Comparing areas word problem
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Practice
Represent rectangle measurementsGet 3 of 4 questions to level up!
Area & perimeter of rectangles word problemsGet 5 of 7 questions to level up!

Line plots with fractions

Learn
Reading a line plot with fractions
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Practice
Interpret dot plots with fraction addition and subtractionGet 3 of 4 questions to level up!

About this unit

When we measure anything, we do it in human-defined 'units'. Different units were defined in different places and for different scales. The two most common are U.S. customary units and metric units. Let's think about how to convert between and among them! We'll also continue thinking about perimeter and area!