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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 3 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 175 square units. One side is 7 units long. Split the area into 140 and 35. How long is the other side?
Answer:
2.A rectangle has an area of 608 square units. One side is 8 units long. Split the area into 560 and 48. How long is the other side?
Answer:
3.A rectangle has an area of 222 square units. One side is 6 units long. Split the area into 180 and 42. How long is the other side?
Answer:
4.A rectangle has an area of 244 square units. One side is 4 units long. Split the area into 240 and 4. How long is the other side?
Answer:
5.A rectangle has an area of 357 square units. One side is 7 units long. Split the area into 350 and 7. How long is the other side?
Answer:
6.A rectangle has an area of 768 square units. One side is 8 units long. Split the area into 720 and 48. How long is the other side?
Answer:

LessonPrint · 4.NBT.B.6 · Set 3 · free to copy for classroom use

Answer key — Divide with an Area Model

Set 3. Prints on its own sheet.

  1. 1.140 ÷ 7 = 20; 35 ÷ 7 = 5; 20 + 5 = 25 units
  2. 2.560 ÷ 8 = 70; 48 ÷ 8 = 6; 70 + 6 = 76 units
  3. 3.180 ÷ 6 = 30; 42 ÷ 6 = 7; 30 + 7 = 37 units
  4. 4.240 ÷ 4 = 60; 4 ÷ 4 = 1; 60 + 1 = 61 units
  5. 5.350 ÷ 7 = 50; 7 ÷ 7 = 1; 50 + 1 = 51 units
  6. 6.720 ÷ 8 = 90; 48 ÷ 8 = 6; 90 + 6 = 96 units

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