Multiplication

Multiplication (often denoted by the cross symbol "×", by a point "·", by juxtaposition, or, on computers, by an asterisk "∗") is one of the four elementary, mathematical operations of arithmetic; with the others being addition, subtraction and division.

The multiplication of whole numbers may be thought as a repeated addition; that is, the multiplication of two numbers is equivalent to adding as many copies of one of them, the multiplicand, as the value of the other one, the multiplier.
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2 X 2 = Boo!: A Set of Spooky Multiplication Stories
The Best of Times: Math Strategies that Multiply
Each Orange Had 8 Slices: A Fun Introduction to Counting, Multiplication, and Math Puzzles for Kids (Ages 4-8)
Multiplying Menace: The Revenge of Rumpelstiltskin (Charlesbridge Math Adventures)
Minnie's Diner: A Multiplying Menu
Amanda Bean's Amazing Dream (Marilyn Burns Brainy Day Books)
Zero the Hero
One Hundred Hungry Ants: A Fun Visual Introduction to Math and Division for Kids (Ages 4-7)
Spaghetti and Meatballs for All! (Marilyn Burns Brainy Day Books)
My Full Moon Is Square
The Grapes of Math
Anno's Mysterious Multiplying Jar
The Doorbell Rang: An Enjoyable Read-Aloud About Sharing and Counting for Children
The Lion's Share: A Tale of Halving Cake and Eating It, Too
Superhero School