White H House of Math logo on multicolored square
Colorful House of Math logo
Log in
Mute Button
Level
Level icon1
Level icon2
Level icon3
Level icon4

Doubling and Halving

3/10
Bold gray checkmark

Fill in the blanks

4 = _ + _

Prev.

Skip

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