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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 16 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 600 square units. One side is 8 units long. Split the area into 560 and 40. How long is the other side?
Answer:
2.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:
3.A rectangle has an area of 366 square units. One side is 6 units long. Split the area into 360 and 6. How long is the other side?
Answer:
4.A rectangle has an area of 704 square units. One side is 8 units long. Split the area into 640 and 64. How long is the other side?
Answer:
5.A rectangle has an area of 264 square units. One side is 6 units long. Split the area into 240 and 24. How long is the other side?
Answer:
6.A rectangle has an area of 245 square units. One side is 7 units long. Split the area into 210 and 35. How long is the other side?
Answer:

LessonPrint · 4.NBT.B.6 · Set 16 · free to copy for classroom use

Answer key — Divide with an Area Model

Set 16. Prints on its own sheet.

  1. 1.560 ÷ 8 = 70; 40 ÷ 8 = 5; 70 + 5 = 75 units
  2. 2.360 ÷ 4 = 90; 8 ÷ 4 = 2; 90 + 2 = 92 units
  3. 3.360 ÷ 6 = 60; 6 ÷ 6 = 1; 60 + 1 = 61 units
  4. 4.640 ÷ 8 = 80; 64 ÷ 8 = 8; 80 + 8 = 88 units
  5. 5.240 ÷ 6 = 40; 24 ÷ 6 = 4; 40 + 4 = 44 units
  6. 6.210 ÷ 7 = 30; 35 ÷ 7 = 5; 30 + 5 = 35 units

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