White H House of Math logo on multicolored square
Colorful House of Math logo
Log inSign up

Learning Tools

Curriculum

Curriculum

Games

Multiplication Master

Multiplication Master

Junior Math

Junior Math

Invite a Friend

Curriculum

Log in
Mute Button
Level
Level icon1
Level icon2
Level icon3
Level icon4

Temperature (metric)

7/10
Bold gray checkmark

How many degrees colder was it in December than in September?

4 thermometers showing Sept, Oct, Nov, Dec. Sept: 12.5 degrees. Oct: 5 degrees. Nov: -5 degrees. Dec: -15 degrees.

Prev.

Skip

Green, mystical-looking orb with white energy streaks
Full pink heartFull pink heart