Click to expand Tap to zoom Challenging Math Problems ★★★★★ ★★★★★ English By (author): Terry Stickels €15.99 Save 0% 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity A01=Terry StickelsAge Group_UncategorizedAuthor_Terry Stickelsautomatic-updateCategory1=Non-FictionCategory=PDZMCOP=United StatesDelivery_Pre-ordereq_isMigrated=2eq_non-fictioneq_scienceLanguage_EnglishPA=Temporarily unavailablePrice_€10 to €20PS=Activesoftlaunch Pre-order Will deliver when available.