Skip to the content
Peabody TeachFor teachers and grown-ups

Break a fraction apart: 4th grade math

Fractions as sums of unit fractions; decompose. A free 4th 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: fractions as sums of unit fractions; decompose.

Teach (10 min)

  • A mixed number is wholes and a fraction together, like 1 1/2.
  • 1 1/2 is the same as 3/2: one whole is 2 halves, plus 1 more half.
  • 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/fractions.mixed?lesson=4-mixed&at=4

Exit ticket (5 min)

  • Three questions on a slip:
  • 1. Write it as a mixed number.
  • 2. Write it as a mixed number.
  • 3. Write it as a fraction.

Question set

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

  1. Write it as a mixed number.
  2. Write it as a mixed number.
  3. Write it as a fraction.
  4. Write it as a mixed number.
  5. Write it as a mixed number.
  6. Write it as a mixed number.
  7. Write it as a fraction.
  8. Write it as a fraction.
  9. Write it as a mixed number.
  10. Write it as a fraction.
Answers
  1. 12/6
  2. 21/8
  3. 29/8
  4. 12/4
  5. 22/3
  6. 35/6
  7. 22/6
  8. 11/3
  9. 31/4
  10. 11/4

Printable sheet

Name: ____________________   Date: ____________

Break a fraction apart (4th grade)

  1. Write it as a mixed number.
  2. Write it as a fraction.
  3. Write it as a mixed number.
  4. Write it as a mixed number.
  5. Write it as a fraction.
  6. Write it as a fraction.
  7. Write it as a mixed number.
  8. Write it as a fraction.
  9. Write it as a mixed number.
  10. Write it as a mixed number.
  11. Write it as a fraction.
  12. Write it as a mixed number.
Key
  1. 348
  2. 104
  3. 148
  4. 223
  5. 195
  6. 95
  7. 338
  8. 218
  9. 246
  10. 235
  11. 198
  12. 126

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.