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3rd grade · Math · Unit 6 of 16

Measuring

Length, mass and capacity

What your child practices

Measuring with centimeters and meters, grams and kilograms, milliliters and liters: choosing sensible units, estimating, comparing and solving measurement problems.

New York State Learning Standards learning standard: NY-3.MD.2 · measuring and estimating liquid volumes and masses in grams, kilograms and liters

How we explain it

Children can open this short lesson before they practice.

  1. Length: millimeters, centimeters, meters and kilometers.
  2. Mass: grams (g) and kilograms (kg).
  3. Capacity: milliliters (mL) and liters (L). Pick a unit that fits.

Example: Which unit fits the mass of an apple? An apple is light. Light things are measured in grams. Answer: Grams (g)

Measuring in New York

In the New York State Learning Standards, this is unit 6 of 16 in 3rd grade Math, after Patterns & Equations and before Time.

Gradelings describes a child's practice on this unit as Beginning, Approaching, Meeting or Exceeding (Four practice steps). That reflects practice, not a report-card mark: the teacher decides the mark.

Source: New York State Education Department (NYSED)

Sample questions

A taste of this unit. In the app, questions change every time and get easier or harder to match your child.

  1. Question 1

    Which unit would you use to measure how much a bucket holds?

    🪣
    • centimeters
    • milliliters
    • liters

  2. Question 2

    How many grams are in 2 kilograms?

    answer box

  3. Question 3

    A pot has 19 L of soup. Lena adds 14 L more. How many liters of soup now?

    🍲

    answer boxL

  4. Question 4

    Which is longer: 1 m or 50 cm?

    • 50 cm
    • They are the same
    • 1 m

  5. Question 5

    Which unit would you use to measure the length of a school bus?

    🚌
    • centimeters
    • meters
    • liters

  6. Question 6

    How long is the caterpillar?

    answer boxcm

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