Sheep Won't Sleep: Counting by 2s, 5s, and 10s, Hardcover/Judy Cox

A comical math skills book with a cast of colorful woolly animals. Clarissa is flabbergasted. Ten of the sheep she was counting while trying to doze off have barged into her bedroom. The bossy ewes tell her to count pairs of alpacas, herds of llamas, and sets of yaks. Pretty soon baaing, bleating, and snorting animals have overrun the room. Luckily Clarissa can use subtraction to literally unravel her problem in this whimsical story that introduces children to counting by twos, fives, and tens and subtracting by tens.