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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 24 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 152 square units. One side is 8 units long. Split the area into 80 and 72. How long is the other side?
Answer:
2.A rectangle has an area of 304 square units. One side is 4 units long. Split the area into 280 and 24. How long is the other side?
Answer:
3.A rectangle has an area of 132 square units. One side is 6 units long. Split the area into 120 and 12. How long is the other side?
Answer:
4.A rectangle has an area of 594 square units. One side is 6 units long. Split the area into 540 and 54. How long is the other side?
Answer:
5.A rectangle has an area of 54 square units. One side is 3 units long. Split the area into 30 and 24. How long is the other side?
Answer:
6.A rectangle has an area of 688 square units. One side is 8 units long. Split the area into 640 and 48. How long is the other side?
Answer:

LessonPrint · 4.NBT.B.6 · Set 24 · free to copy for classroom use

Answer key — Divide with an Area Model

Set 24. Prints on its own sheet.

  1. 1.80 ÷ 8 = 10; 72 ÷ 8 = 9; 10 + 9 = 19 units
  2. 2.280 ÷ 4 = 70; 24 ÷ 4 = 6; 70 + 6 = 76 units
  3. 3.120 ÷ 6 = 20; 12 ÷ 6 = 2; 20 + 2 = 22 units
  4. 4.540 ÷ 6 = 90; 54 ÷ 6 = 9; 90 + 9 = 99 units
  5. 5.30 ÷ 3 = 10; 24 ÷ 3 = 8; 10 + 8 = 18 units
  6. 6.640 ÷ 8 = 80; 48 ÷ 8 = 6; 80 + 6 = 86 units

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