How to learn Grade 2: Mathematics
South Dakota academic standards: Mathematics, Grade 2
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1. Number and Operation in Base Ten · Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones; e.g., 706 equals 7 hundreds, 0 tens, and 6 ones. Understand t
- The three digits of a three-digit number: Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones
2. Measurement and Data · Identify and count coins and bills and apply that understanding to solve word problems.
- Halves and quarters (age 7+): Solve word problems involving dollar bills, quarters, dimes, nickels, and pennies, using $ and ¢ symbols appropriately
3. Operations and Algebraic Thinking · Add and subtract within 20.
- Addition and subtraction within 20: Add and subtract within 20 using strategies such as making ten, decomposing a number leading to ten, and using known facts
- Fluent adding and subtracting within 20: Fluently add and subtract within 20 using mental strategies; know from memory all sums of two one-digit numbers