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Addition of Double Digits

2.NBT.B.5
Answer Keys Here

Aligned To Common Core Standard:

Grade 2 Operations - 2.NBT.B.5

How to Add Two Double-Digit Numbers - Adding two, two-digit numbers can be confusing for a child who just started to add numbers. Thus, for them to get used to adding double-digit (or triple-digit numbers), you can use the place-value method. Let's consider an example and we will sequentially solve them. 83 + 27 = what? Firstly, we will add 3 and 7 together to make 10. We will send the carried digit to the top of the tens value. The next step is to add the numbers to the tens place. The values are 8 + 1 + 2; which makes it 11. The total answer becomes 110. This worksheet series helps students learn how to find the sum of two-digit numbers.




Homework Sheets

The first two sheets offer you a helpful tip or two.

  • Homework 1 - Always start at the ones column. Then move to the tens place.
  • Homework 2 - If the ones column is greater than ten, carry that extra digit over to the tens place.
  • Homework 3 - I like to have students place a check next to the problem, if it involves carrying to another place.



Practice Worksheets

We arrange addends in different ways and finish off with a grid style exercise.

  • Practice 1 - From right to left add the numbers and write their sum in the boxes.
  • Practice 2 - We provide you with two addends.
  • Practice 3 - This is a grid style worksheet.



Math Skill Quizzes

Tens problems should give you a good indicator of what level your students are at.

  • Quiz 1 - The top two problems provide you with plenty of room to work.
  • Quiz 2 - This is so nuclear!
  • Quiz 3 - You will need to put those two together.