GRADE 2 MATH · CHAPTER 2
Operations & problem solving
Study each lesson in order, or choose the idea you need today.
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Addition & subtraction
Subtract two-digit numbers
Find differences between two-digit numbers using place value.
Number & operations
Add and subtract to one hundred
Use tens and ones or a known relationship to add and subtract within one hundred.
Number & operations
Build equal groups
Interpret a total as equal groups and connect it with repeated addition.
Multiplication & division
Count arrays with repeated addition
Use equal rows to connect an array with repeated addition.
AN EXAMPLE FROM THIS CHAPTER
What is 48 + 27?
Show answer & explanation
75
8 + 7 = 15: regroup one ten. 4 + 2 + 1 tens makes 7 tens and 5 ones.
Curriculum & source notes
These are original Little Play study books organized around U.S. school topics. The official curriculum references below guide topic scope and progression. Coverage is selected, not a complete curriculum or a verified match to every state standard. They are not copies of a publisher’s textbook. Check your school’s syllabus and book edition.
High-school courses can be taken in different years. Choose the topic that matches the student’s current course.
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