Math With Mr DJ

Grade 1 · Operations & Algebraic Thinking · 1.OA.A.1

Math Stories Within 20 Worksheets

Download the practice worksheet free, with no sign-up. Problems climb from Mild to Spicy, with Mr DJ’s worked example to help you begin. Get the complete teaching materials in the paid lesson pack.

First page of the math stories within 20 practice worksheet Open the practice worksheet

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Practice prints on US Letter paper. Free for classroom and home use.

Teach it with Mr DJ

One topic. A complete lesson.

  • HomeworkIncluded
  • Exit ticketIncluded
  • Worked answer keyIncluded
  • Lesson slides PDFIncluded
  • Editable lesson slidesIncluded
  • Matching math gameIncluded
  • Build Confidence support guideIncluded
  • Go Deeper extensionIncluded

Print, project, edit and play. The matching game uses the same Math Crew and pepper levels.

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Step-by-step math videos on the Math With Mr DJ YouTube channel →
Key idea

solve math stories with objects, pictures and equations.

Sample problems

  1. Tan has 5 beads. He gets 3 more. How many now?
  2. 8 birds sit. 3 fly away. How many stay?
  3. Some shells and 3 more make 8. How many shells were there first?
  4. 5 blocks are in a box. Some join. Now there are 8. How many joined?

Common mistakes to watch for

  • Build it or draw it. Tell how you know.

The answer key explains each one, so you can tell what a wrong answer means.

How to use this set

  1. Teach with the slides (about 15 minutes): a warm-up, the big ideas, a “spot the slip” challenge, Mr DJ’s worked example, and a pick-your-pepper round on whiteboards. Or watch the video together.
  2. Practice with the worksheet. Everyone does Mild and Medium, then climbs to Spicy and Extra Spicy.
  3. Check understanding with the exit ticket, and send the homework home.
  4. Mark with the answer key — each answer shows the steps and the most likely mistake. The slides’ teacher notes are in the key too.

More Grade 1 worksheets

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Daily math puzzlesSix new puzzles every day, mild to spicy. Great as a warm-up. Step-by-step videosFree math lessons on YouTube from Mr DJ.

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