This book contains 52 pages for the 1.NBT.B.2 standard in first grade according to Common Core Number Base Ten. This book contains 22 printables that have the children count, illustrate and write the number in base ten. I have used pages one to thirteen as guided or independent practice. Pages 14-17 are open-ended activities that I have used in Math centers. Pages 18-19 are enrichment pages for those children that are able to understand place value to the hundreds place. In addition, I have added games to use in math centers. I have used this in my classroom.