Read thermometers, step by step

Reading a thermometer combines number lines with a real scale children see in weather reports and daily life.

The question
Temperature: ______ °C −20°−10°10°20°30°40° °C

Read the thermometer

numbered every:10°C
above zero → count upwards
numbered every:10°C
30°C
  1. Check the numbered marks first: they go up in 10°C, so each small gap between them is worth part of that 10 — not automatically one.
  2. Read where the top of the liquid sits, counting up from zero.
  3. It reads 30°C.

How it works.

  1. 01

    Check the numbered marks first: they go up in 10°C, so each small gap between them is worth part of that 10 — not automatically one.

  2. 02

    Read where the top of the liquid sits, counting up from zero.

  3. 03

    It reads 30°C.