Gr 2-4-- Earning, spending, saving and borrowing money are the subjects explored in this sequel to How Much is a Million? (Lothrop, 1985) . Aided by Ancona's clear photographs of various denominations of money, Schwartz explains economic concepts verbally, while Kellogg fancifully and humorously illustrates them. ``Cheerful and Willing'' children perform varied chores for Marvelosissimo the Mathematical Magician, who suggests options for using their earnings. As the tasks become more difficult (babysitting an obstreperous ogre, for example) pay increases and options widen. The usual Kellogg profusion of smiling cats, earnest dogs, prancing ponies, and a unicorn fill and spill over the pages. Ideal for classroom use by creative teachers, and attractive enough to keep the interest of even non-mathematically inclined readers, this is sure to be popular. These concepts are more complex than those in Schwartz' previous book, however, and will be best suited to slightly older readers. This is one investment that's sure to pay interest in reader dividends. --Louise L. Sherman, Anna C. Scott School, Leonia, NJ