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Divide with an Area Model is a free printable Grade 4 math worksheet on finding a missing side by splitting the area into two parts, aligned to Common Core standard 4.NBT.B.6. It prints 6 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two students in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

Set 8 of 25 · the same problems every time you open this link.

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Set 1 has all 25 in a single PDF. All 25 sets ask different questions.

Divide with an Area Model

4.NBT.B.6

NameDate

Read carefully, then work out the answer.

1.A rectangle has an area of 368 square units. One side is 4 units long. Split the area into 360 and 8. How long is the other side?
Answer:
2.A rectangle has an area of 42 square units. One side is 3 units long. Split the area into 30 and 12. How long is the other side?
Answer:
3.A rectangle has an area of 224 square units. One side is 7 units long. Split the area into 210 and 14. How long is the other side?
Answer:
4.A rectangle has an area of 295 square units. One side is 5 units long. Split the area into 250 and 45. How long is the other side?
Answer:
5.A rectangle has an area of 84 square units. One side is 4 units long. Split the area into 80 and 4. How long is the other side?
Answer:
6.A rectangle has an area of 172 square units. One side is 4 units long. Split the area into 160 and 12. How long is the other side?
Answer:

LessonPrint · 4.NBT.B.6 · Set 8 · free to copy for classroom use

Answer key — Divide with an Area Model

Set 8. Prints on its own sheet.

  1. 1.360 ÷ 4 = 90; 8 ÷ 4 = 2; 90 + 2 = 92 units
  2. 2.30 ÷ 3 = 10; 12 ÷ 3 = 4; 10 + 4 = 14 units
  3. 3.210 ÷ 7 = 30; 14 ÷ 7 = 2; 30 + 2 = 32 units
  4. 4.250 ÷ 5 = 50; 45 ÷ 5 = 9; 50 + 9 = 59 units
  5. 5.80 ÷ 4 = 20; 4 ÷ 4 = 1; 20 + 1 = 21 units
  6. 6.160 ÷ 4 = 40; 12 ÷ 4 = 3; 40 + 3 = 43 units

Last reviewed 2026-09-05. Aligned to 4.NBT.B.6 of the Common Core State Standards for Mathematics.