Grade 4 Measurement Worksheets — Mixed Units & Conversions
By fourth grade, a measurement is rarely a single clean number. A shelf is 3 m 40 cm, a parcel weighs 2 kg 500 g, and being able to move between that mixed form and a single unit is what makes the arithmetic possible. Eight sub-skills are offered at this grade and the page opens on Length Units, where the level control steps from Convert to a smaller unit, to Convert to a larger unit, to Both directions. Compound Measurements rewrites a mixed measurement using one unit and splits a single unit back into two, and Adding and Subtracting Measurements handles the arithmetic, including the regrouping that comes with it.
Set the difficulty, size the sheet with the question-count stepper, and print with or without answers. Because the link reproduces the identical questions, the same page works for today's lesson and a fair re-test a fortnight later without you rebuilding anything.
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Measurement · Grade 4
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Grade 4 · 2 pages · A4More Grade 4 measurement skills
Each one generates a different kind of question, with its own three levels and answer key.
- Length UnitsChange a length between millimeters, centimeters, meters and kilometers.
- Mass: Grams and KilogramsChange a weight between milligrams, grams and kilograms.
- Units of TimeChange between seconds, minutes, hours, days and weeks.
- Compound MeasurementsRewrite measurements like 3 m 40 cm using one unit, and back again.
- Adding and Subtracting MeasurementsAdd and subtract measurements written in two units.
- Ordering MeasurementsPut three or four measurements in order when the units are mixed.
- Reading Scales and RulersWork out what a ruler, kitchen scale or measuring jug is showing.
- Perimeter in Mixed UnitsFind a perimeter when the sides are given in different units.
What each level generates
Grade 4 length units — the exact skill behind each difficulty setting, straight from the generator.
- Level 1Convert to a smaller unit
- Level 2Convert to a larger unit
- Level 3Both directions
Grade levels follow the progression common to most English-language curricula — not one specific national curriculum. Every level shows exactly what it generates, so you can check the fit with your own program. See the full scope & sequence →
What Grade 4 measurement demands
Two skills sit at the heart of this year. The first is the two-part conversion: 3 m 40 cm means 300 cm plus 40 cm, so 340 cm, and 340 cm splits back into 3 whole meters with 40 cm left over. The second is calculating with those quantities — adding two lengths, or subtracting one mass from another — and knowing what to do when the smaller unit overflows or runs short.
That second skill is really column arithmetic in disguise, with a base that is not ten. When 40 cm and 75 cm make 115 cm, the extra 100 cm is carried across as one whole meter, exactly like carrying a ten. When 6 kg 50 g take away 4 kg 650 g, a whole kilogram has to be broken into 1000 g before the grams can be subtracted. Naming the link to carrying and borrowing turns an unfamiliar task into one children have done for years.
A reliable method for mixed units
The safest routine has three moves: convert everything to the smaller unit, do the arithmetic there, then convert the result back to mixed form. It is one extra step, but it removes every regrouping decision and gives a natural check — the answer in a single unit and the answer in mixed form must agree. Once a child is fluent, the direct column method is quicker, but starting here builds confidence and makes errors easy to spot.
The One unit into two level of Compound Measurements is worth more time than it first appears, because "how many whole kilograms are in 3950 g, and what is left over?" is a division-with-remainder question wearing a measurement costume. Children who see that connection stop guessing. Keep sets to 10–12 questions since each one now carries several steps, and print the answer key so a full working-out can be checked line by line.
Frequently asked questions
▸What measurement skills are expected in Grade 4?
Converting between mixed units and a single unit in both directions, and adding or subtracting measurements written in mixed units with regrouping. Compound Measurements covers the conversions and Adding and Subtracting Measurements covers the arithmetic.
▸How do you write 3 m 40 cm in centimeters?
Convert the whole meters first — 3 m is 300 cm — then add the leftover 40 cm, giving 340 cm. That is the Two units into one level of Compound Measurements, using length, mass and capacity in turn.
▸How do you subtract measurements like 6 kg 50 g − 4 kg 650 g?
Break one whole kilogram into 1000 g so the grams can be taken away: 6 kg 50 g becomes 5 kg 1050 g, then 1050 − 650 = 400 g and 5 − 4 = 1 kg, so the answer is 1 kg 400 g. Converting both amounts to grams first works just as well.
▸Do the answers always come out as whole numbers?
Yes. Every quantity is built from whole units and clean remainders, so answers are exact whole numbers or a tidy mixed pair like 5 m 65 cm — no decimals and no rounding at this grade.