Addition of Double Digits
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.
- Step-by-Step Lesson- I do two problems. The first one has no carrying, the second one does.
- Guided Lesson - Only the first one has carrying. Why not start out with the hard one?
- Guided Lesson Explanation - I numbered each problem twice on the explanation.
- Practice Sheet - A good old fashion worksheet.
- More 2-Digit Addition Practice - Extra practice using my five by five rectangle of problems.
- Matching Sheet - Match the two numbers that would create a sum. This one was hard to put together.
- 2-Digit Addends In Grid Format Worksheet Pack - The grid style comes in handy here.
- 2-Digit Addition Practice and Lesson - For those students that missed the previous lesson or need more help.
- Carrying Tens and Hundreds 5 Pack - You will always be carrying a number on these either at the tens or ones place.
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.
We arrange addends in different ways and finish off with a grid style exercise.