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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.

Maine Learning Results learning standard: 3.MD.A.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 Maine

In the Maine Learning Results, 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: Maine Department of Education

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

    How long is the carrot?

    answer boxcm

  2. Question 2

    A ribbon is 77 cm long. Maya cuts off 57 cm. How long is the ribbon now?

    🎀

    answer boxcm

  3. Question 3

    How many grams are in 2 kilograms?

    answer box

  4. Question 4

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

    🖍️
    • centimeters
    • liters
    • meters

  5. Question 5

    About how tall is a classroom door?

    🚪
    • 2 m
    • 20 m
    • 2 cm

  6. Question 6

    About how much does a teaspoon hold?

    🥄
    • 500 mL
    • 5 L
    • 5 mL

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