Double Digit Addition Worksheets | Two-Digit Addition Practice with Answer Key

Double digit addition worksheets for steady practice

These double digit addition worksheets are a 12 page packet with 80 questions that all add two-digit numbers. The worksheet is marked for grades 1 to 4.

There are no word problems and no extra topics. Students add, check and write sums, with four sections that change the way the question is asked.

Teachers who need double digit addition practice for a math center, homework or a quick daily task will find four sections of 20 questions here, and the double digit addition with answer key makes checking quick.

What’s on the pages

The worksheet has four sections, and each one has its own heading and short directions.

• Multiple choice addition: 20 questions where students choose the right sum, such as 18 + 18, 50 + 35 and 68 + 21.
• True or false: 20 statements where students decide if the sum is correct, such as 19 + 21 = 39 and 54 + 32 = 86.
• Calculate the sum: 20 questions where students write the sum in a blank, such as 63 + 16, 58 + 12 and 31 + 49.
• Advanced practice: 20 questions with the same blank format, such as 43 + 46, 14 + 54 and 48 + 31.

All sums stay under 100. Some problems, like 18 + 18 or 58 + 12, need students to carry a ten, so the packet gives practice with and without regrouping.

The double digit addition true or false section is the part that sets this packet apart. Instead of only producing sums, students check sums that someone else wrote, which is a skill they need when they review their own work. The adding two-digit numbers worksheet format is plain, so students are never confused about what to do.

Because every page uses the same layout, you can send one section home as a double digit addition worksheets assignment and keep the rest for school.

Children who finish early can write their own true or false sums for a partner to check.

What’s in the download

• Student worksheet: 12 pages
• Answer key: 14 pages, with a short explanation after each answer
• Answer sheet: 4 pages
• Lesson plan: 1 page

The four parts add up to 31 pages, and everything comes as PDF.

How to use these double digit addition worksheets

The lesson plan is set for 60 minutes. Its objectives are to master the addition of two-digit numbers, to improve mental math speed and accuracy, and to judge whether a given addition equation is right. It lists only pencils, erasers and scratch paper as materials.

The plan has the teacher explain the directions for each section, then lets students work on their own. A short review at the end looks at the problems that students found hardest.

The multiple choice section is a gentle start, because the answer is on the page. The true or false section teaches checking, since students must estimate or add before they decide. The last two sections ask for a sum with no help.

If you use the packet over a week, give one section a day and ask students to write the sums they missed on a card. The same short list of problems then becomes a quick review on Friday.

The answer sheet keeps the worksheet clean for reuse. The answer key explains each answer in a sentence, so a parent or helper can see the steps.

Where it fits

Use the double digit addition worksheets for morning work, math centers, intervention groups, homework or a summer review. Homeschool families can use one section a day.

Take a look at the preview pages before you buy, so you can see the worksheet, the answer key and the answer sheet.

For more practice, browse the math worksheets, the wider set of printable worksheets or the whole shop.

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