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Addition of Triple and Double Digits

2.NBT.B.7
Answer Keys Here

Aligned To Common Core Standard:

Grade 2 Operations - 2.NBT.B.7

Tips for Adding Triple and Double-Digit Numbers - When you add triple and double-digit numbers, you need to be quick on your solving methods. However, to add much more significant numbers, students need to understand the trick behind these sums. For instance, if we add 27 and 18, you know that we can add tens first and then add the ones. In the present case, we will first add the tens, i.e., 2 and 1 which makes 3. Secondly, we will add the ones who make 115 (7 + 8). You should keep such scenarios in mind that whether you are solving two-digit numbers or three-digit numbers. These worksheets and lessons can be used to help students learn to find the sum of a two and three digit number combo.




Homework Sheets

Each of these sheets start you off with a completed problem.

  • Homework 1 - The example shows you how to find the sum of two hundred eighty-nine and twenty-nine.
  • Homework 2 - We slide the thirteen to the tens place.
  • Homework 3 - A box within a box.



Practice Worksheets

No surprises on these either.

  • Practice 1 - Horizontal and vertical sums are placed here.
  • Practice 2 - Watch how you align these.
  • Practice 3 - The ones place requires a carry over to the tens place.



Math Skill Quizzes

We throw in a few bumps by purposely not aligning a few problems to see how students handle it.

  • Quiz 1 - See which orientation works better for each student.
  • Quiz 2 - Not all students prefer vertical alignment.
  • Quiz 3 - You will notice that a few values come around more than once.