The Grapes of Math - This book is one of several wonderful picture riddle books by Greg Tang. They invite students to see numbers as groups of smaller numbers (subitize) and supports skip counting and early understanding of multiplication. 

The Doorbell Rang - Ma makes a dozen cookies for her two children to share. Each ring of the doorbell brings more friends to share the same delicious cookies Ma has made. Students can explore division, fair sharing, skip counting, problem solving as they start again and redistribute each time a new friend arrives. 

Spaghetti and Meatballs for All

Two of Everything

Amanda Bean' Amazing Dream

Multiplying Menace

One is a Snail, Ten is a Crab

Minnie's Diner

One Hundred Hungry Ants

Six Dinner Sid

Bean 13

A Remainder of One

The Great Divide

365 Penguins

Snowflake Bentley

Sea Squares

Anno's Mysterious Multiplying Jar

The Kings Chessboard

Uno's Garden

Cheetah Math

The Multiplying Menace Divides

If You Hopped Like a Frog - This book is great for proportional reasoning and use of ratios

Bats on Parade

Ten Times Better

512 Ants on Sullivan Street

The King's Commissioners

My Full Moon is Square

Luna's Yum Yum Dim Sum

How Many Seeds in a Pumpkin?

How Many Guinea Pigs Can Fit on a Plane?