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3rd grade · Math · Unit 15 of 18

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.

Texas Essential Knowledge and Skills (TEKS) teks student expectation: 3.7(D); 3.7(E) · choosing and using units of liquid volume and weight

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 Texas

In the Texas Essential Knowledge and Skills (TEKS), this is unit 15 of 18 in 3rd grade Math, after Time and before Scaled Graphs.

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: Texas Education Agency (TEA)

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 spoon?

    answer boxcm

  2. Question 2

    Which is longer: 1 m or 80 cm?

    • They are the same
    • 1 m
    • 80 cm

  3. Question 3

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

    🍼
    • centimeters
    • liters
    • milliliters

  4. Question 4

    How many milliliters are in 1 liter?

    answer box

  5. Question 5

    A ribbon is 93 cm long. Ravi cuts off 18 cm. How long is the ribbon now?

    🎀

    answer boxcm

  6. Question 6

    About how heavy is an apple?

    🍎
    • 150 kg
    • 150 g
    • 15 kg

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