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Add three numbers: 1st grade math

Three addends. A free 1st grade lesson plan, a question set with answers and a printable sheet with its key. Copy it and make it yours.

Lesson plan

Goal

  • Students can do this: three addends.

Teach (10 min)

  • Add two numbers, then add the third.
  • Look for a double, like 4 + 4, or two numbers that make 10.
  • Work one example on the board while students say each step aloud, then do one together.

Practise (15 min)

  • Students work the printable sheet in pairs, then alone.
  • Or practise it as a game with no sign-up: https://peabody.kids/math/numsense.g1_add3?lesson=1-numsense-add3-1&at=1

Exit ticket (5 min)

  • Three questions on a slip:
  • 1. Add the three numbers: 3 + 2 + 4 = ?
  • 2. Add the three numbers: 3 + 6 + 1 = ?
  • 3. Add the three numbers: 2 + 5 + 1 = ?

Question set

10 questions that read in words, easiest first. Questions that need a picture are on the printable sheet below.

  1. Add the three numbers: 3 + 2 + 4 = ?
  2. Add the three numbers: 3 + 6 + 1 = ?
  3. Add the three numbers: 2 + 5 + 1 = ?
  4. Add the three numbers: 1 + 1 + 2 = ?
  5. Add the three numbers: 4 + 2 + 2 = ?
  6. Add the three numbers: 2 + 2 + 1 = ?
  7. Add the three numbers: 3 + 4 + 3 = ?
  8. Add the three numbers: 1 + 1 + 5 = ?
  9. Add the three numbers: 3 + 2 + 2 = ?
  10. Add the three numbers: 2 + 5 + 2 = ?
Answers
  1. 9
  2. 10
  3. 8
  4. 4
  5. 8
  6. 5
  7. 10
  8. 7
  9. 7
  10. 9

Printable sheet

Name: ____________________   Date: ____________

Add three numbers (1st grade)

  1. Add the three numbers: 5 + 1 + 4 = ?
  2. Add the three numbers: 2 + 2 + 6 = ?
  3. Add the three numbers: 3 + 4 + 3 = ?
  4. Add the three numbers: 1 + 1 + 8 = ?
  5. Add the three numbers: 2 + 3 + 5 = ?
  6. Add the three numbers: 1 + 2 + 5 = ?
  7. Add the three numbers: 3 + 1 + 1 = ?
  8. Add the three numbers: 1 + 4 + 2 = ?
  9. Add the three numbers: 2 + 7 + 1 = ?
  10. Add the three numbers: 4 + 2 + 3 = ?
  11. Add the three numbers: 4 + 7 + 3 = ?
  12. Add the three numbers: 3 + 3 + 9 = ?
Key
  1. 10
  2. 10
  3. 10
  4. 10
  5. 10
  6. 8
  7. 5
  8. 7
  9. 10
  10. 9
  11. 14
  12. 15

Written by Peabody from its own skill pages. Free, no ads, no sign-in. Children can practise this on Peabody. More from teachers: teacher-shared resources.