8.12 Measure, estimate, order and compare temperature

We should order the tens first, then the ones.

The numbers in the place value table are shown:

44 and 48 have the same smallest tens digit, so they are smaller than 84.

But 44 has the smaller ones digit, so 44 is smaller than 48.

The numbers from smallest to largest are: 44,\,48,\, 84

Count each space mark from the red liquid level to 0 and use the scale on the thermometer.

There are 5 spaces between 0\degree\text{C} and 10\degree\text{C}. This means that each space is 10 \div 5=2\degree\text{C} .

The red liquid level goes up to 4 spaces above 0.

The temperature shown is 4 \times 2\degree\text{C} = 8 \degree\text{C}

Order the numbers from largest to smallest.

Warmer temperatures are higher number values than cooler temperatures. We need to order the number value of temperature from largest to smallest as shown:39, \, 38, \, 35

The correct answer is option B.