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3rd grade · Math · Unit 6 of 14

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.

Alaska content standards learning standard: 3.MD.2 · estimating and measuring liquid volumes and masses

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 Alaska

In the Alaska content standards, this is unit 6 of 14 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: Alaska Department of Education and Early Development

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

    A puppy has a mass of 28 kg. A kitten has a mass of 6 kg. How much more mass does the puppy have?

    🐶

    answer boxkg

  2. Question 2

    About how long is a new pencil?

    ✏️
    • 190 cm
    • 19 m
    • 19 cm

  3. Question 3

    How long is the crayon?

    answer boxcm

  4. Question 4

    How many milliliters are in 1 liter?

    answer box

  5. Question 5

    Which is heavier: 1 kg or 750 g?

    • They are the same
    • 1 kg
    • 750 g

  6. Question 6

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

    🚌
    • kilograms
    • meters
    • centimeters

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