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Adding Single and Double Digits

2.NBT.B.5
Answer Keys Here

Aligned To Common Core Standard:

Grade 2 Operations - 2.NBT.B.5

Tips to Learn to Add Single and Double Digits - Sure, addition is fun, but when you are trying to teach it to your child, you start with the addition of single digits. Thus, before you move onto the addition of double-digit numbers, you need to understand a few tips for unique digit numbers. To add single-digit numbers, we will use the concept of benchmarks. Look at the following set of tips. For instance, if we add the numbers 8 and 5. We'll separate 8 into 5 and 3. Firstly, we will add 5 from the original number and the broken down 5 from 8. The answer is 10. Then, we will add the remaining 3 into 10 to answer 10. Now, if we add two-digit numbers, we can break apart by place values to get the answer. For instance, if we take an example of 13 added to 87, let's add them breaking them both. We will separate 13 into 10 and 3, while we will separate 80 and 7. We will add 3 and 7 from both numbers to make it 10. We will then add 10 and 80 to make 90. Then, we will add 90 and 10 to make the final answer 10. If we keep the following tips in mind, then adding numbers could become quite easy. These worksheets and lessons help students master finding simple sum problems.




Homework Sheets

It's always nice to start with an example problem completed for you.

  • Homework 1 - We visually show you how to carry that value to the next place value.
  • Homework 2 - Lets show you how to make 22.
  • Homework 3 - Some require carrying, but most don't.



Practice Worksheets

These are peppered with tips and hint for students.

  • Practice 1 - When you add numbers and it leads to a value of 10 or more, make sure to carry the one to the tens place.
  • Practice 2 - A two-digit number has two place values.
  • Practice 3 - The column on the left is called the tens place or tens column. Each number in this column has a value of ten. I.e. 5 is equal to 50 in the tens place.



Math Skill Quizzes

Yeah, this is one of the few section where I added clip art to quizzes. I normally feel the need to make assessments more sterile, I guess.

  • Quiz 1 - The column on the right is called the ones place or ones column. Each number has the value of 1.
  • Quiz 2 - These are a bit bottom heavy.
  • Quiz 3 - A nice selection of 9s in this one.