Published in July 2020 by G.P. Putnam's Sons Books for Young Readers, Dozens of Doughnuts pairs perfectly with doughnuts and munchkins (both the edible and no non-edible kind).
The Original Area Mazes: 100 Addictive Puzzles to Solve with Simple Math―and Clever Logic! features area mazes puzzles created by Ryoichi Murakami and Japanese puzzle master Naoki Inaba. These puzzles have a sudoko puzzle feel. However, in addition to using logical thinking, the solver of Area Maze puzzles uses two mathematical ideas over and over. The first idea is the area of a rectangle is length times width. The second idea involves the relationship between factors and multiples (although it's not necessary to use this mathematical language in order to solve of course).
In The Multiplying Menace, Rumpelstiltskin returns, demanding repayment for the gold he spun for a princess (who's now Queen). Rumpelstiltskin requests that the Queen's son, Peter, works off the debt. Threatening to increase the pest population and decrease the kingdom's livestock if repayment is not made. Peter must figure out how Rumpelstiltskin's magical stick works to save the kingdom.