Math Mammoth Grade 1-B Worktext is the student book for the latter half of grade 1 mathematics studies. It covers addition and subtraction facts, telling time to the half hour, measuring, adding and subtracting two-digit numbers, and counting coins.
Being a worktext means it contains both the instruction ("text") and the exercises for the student ("work"). The instruction is written directly to the student. This book is the full-color version (inside pages are in full color). Please note the book does not contain answers; the answer key is available separately.