Addition Word Problems Worksheet | Word Problems Within 100 with Answer Key

Addition word problems for sums within 100

This set of addition word problems has 65 questions on sums within 100, and every question is a short story about children, shops, gardens and classrooms. It is written for 1st grade.

The numbers are one-digit and two-digit, such as 33 and 5, 63 and 5 or 18 and 11, so students practise addition within 100 inside real sentences instead of bare equations.

This packet is made for 1st grade addition word problems practice. It gives addition word problems within 100 in four formats, so one download covers practice, homework and a quick check, and the addition word problems with answer key save you the grading time.

What’s on the pages

The worksheet has four sections, and each section asks for a different kind of answer.

• Multiple choice word problems: 20 questions with four answer choices each.
• True or false addition statements: 15 stories where students decide whether the total that is given is right.
• Fill in the blank: 15 sentences finished with a number from a Number Bank.
• Short answer: 15 problems where students write the answer themselves.

The characters are named children and shopkeepers. The things they count are easy to picture: pictures drawn, loaves of bread, stickers, crayons, stars, seashells, roses, beads and bottles of milk.

Sample questions from the worksheet

These examples show the level of the packet.

• Huda drew 33 pictures and her sister drew 5 more. How many pictures did they draw in total?
• There are 52 birds on a tree and 6 more birds fly to the tree. How many birds are on the tree now?
• A garden has 50 red roses and 12 yellow roses. How many roses are in the garden?
• Bilal collected 80 seashells and found 1 more, so now he has a number of seashells to fill in.

What’s in the download

• Student worksheet: 11 pages
• Answer key: 13 pages, with a short explanation after each answer
• Answer sheet: 3 pages for circling letters or writing answers
• Lesson plan: 2 pages

That is 29 pages in total, and everything comes as PDF.

How to use this addition word problems worksheet

The lesson plan suggests 60 to 90 minutes. It starts with a quick review of addition facts within 20, then models one two-digit story on the board with base-ten blocks or counting chips before students work on their own.

It also lists the words that signal an addition story: in total, altogether, in all and more. Students can underline those words before they solve, and that habit helps with every later word problem. Because the stories name everyday things, children can also act them out with counters before they write the sum.

You can split the packet as well. Use Section 1 as morning work, send the true or false section home, and keep the short answer problems for a small group that needs to show its thinking.

Children who can already add within 20 can start here without extra preparation. Homeschool families and tutors can use it the same way, one section per session.

The answer sheet makes checking the multiple choice section quick. Each answer in the key has a short explanation, so a parent helping at home can see why a total is right.

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

If your class needs other skills or grades, browse the math worksheets or the full set of printable worksheets. You can find everything else in the shop.

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