1. A thermometer has marks labeled at 40 and 50 degrees. There are four smaller tick marks between them. If the liquid stops on the second mark above 40, what is the temperature? ___ degrees.
2. On a temperature scale, marks are labeled at 20 and 40. There are three smaller tick marks between them. What is the value in degrees of each space between the tick marks?
3. A Celsius thermometer has labels at 0 and 10. There are four small marks between them. If the reading is on the fourth mark above 0, the temperature is ___ degrees Celsius.
4. A scale has labels every 10 degrees (e.g., 60, 70). There are 4 marks creating 5 spaces between 60 and 70. Which calculation finds the temperature at the first mark above 60?
5. A thermometer's scale is marked at 80 and 100. If there is only one tick mark exactly halfway between them, that mark represents a temperature of ___ degrees.
6. The temperature in a desert was $56°$C at 10 a.m. and rose to $73°$C by 3 p.m. By how many degrees Celsius did the temperature increase? ___ °C
7. In a cold city, the temperature was $-12°$F at dawn. By midday, it had warmed up to $9°$F. What was the total change in temperature?
8. A liquid at a temperature of $10°$C is placed in a freezer and cools to $-5°$C. By how many degrees did the liquid's temperature drop? ___ °C
9. During a polar night, the temperature was $-7°$C. By the next morning, it had fallen to $-19°$C. What was the change in temperature?
10. The temperature was $-4°$F in the morning and rose to $11°$F in the afternoon. Which expression correctly calculates the temperature change?