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

Double the number 3

3 times 2 counters

Prev.

Skip

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