Players multiply the numbers 0 - 10 shown on gems, then compare the products. The player with the greater product takes all of the gems. Players earn points for correctly multiplying the numbers on their gems, correctly comparing the products, and having the greater product. The player with more points at the end of eight rounds wins!

PHOTOS: totallyjamie/Shutterstock. AUDIO: IB Audio; Airborne Sound/Soundsnap; BLASTWAVE FX/Soundsnap; Mike Dred/Soundsnap; Stuart Duffield/Soundsnap; Sound Effects by Getty Images Music; Rebecca Parnell/Soundsnap; SFX Bible/Soundsnap. VOICE: McGraw-Hill Education.