Small practice. Bright discoveries.Explore the free starter collection
worksheetstudio.
Sign in
Back to worksheets
ReasoningAges 4-6

Combined sides of polygons

Combine multiple polygons and calculate the total number of straight sides altogether. Review suitability for your learners before teaching.

New variationTry interactive challengeBrowse templates
Age band:Ages 4-6Ages 7-9

Choose “Save as PDF” to keep a copy. Use your browser’s paper setting for A4 or Letter.

Worksheet StudioPractice pack · Ages 4-6

Combined sides of polygons

Take your time. Show your thinking.

  1. 1. How many sides are there altogether in 3 nonagons and 1 octagon?

    3 · 1 · Combined sides of polygons

  2. 2. How many sides are there altogether in 3 hexagons and 1 heptagon?

    3 h · 1 h · Combined sides of polygons

  3. 3. How many sides are there altogether in 5 octagons and 1 triangle?

    5 · 1 · Combined sides of polygons

  4. 4. How many sides are there altogether in 4 squares and 1 pentagon?

    4 s · 1 · Combined sides of polygons

  5. 5. How many sides are there altogether in 4 hexagons and 1 decagon?

    4 h · 1 · Combined sides of polygons

  6. 6. How many sides are there altogether in 4 hexagons and 1 hexagon?

    4 h · 1 h · Combined sides of polygons

  7. 7. How many sides are there altogether in 1 square and 1 hexagon?

    1 s · 1 h · Combined sides of polygons

  8. 8. How many sides are there altogether in 2 octagons and 1 decagon?

    2 · 1 · Combined sides of polygons

  9. 9. How many sides are there altogether in 4 squares and 1 square?

    4 s · 1 s · Combined sides of polygons

  10. 10. How many sides are there altogether in 4 decagons and 1 decagon?

    4 · 1 · Combined sides of polygons

  11. 11. How many sides are there altogether in 5 octagons and 1 pentagon?

    5 · 1 · Combined sides of polygons

  12. 12. How many sides are there altogether in 4 decagons and 1 hexagon?

    4 · 1 h · Combined sides of polygons
12 questions · Seed 66 · Age guidance, not curriculum certification
View the answer key
Worksheet StudioAnswer key · Ages 4-6

Combined sides of polygons

Answers and reasoning. Review before teaching.

  1. 1. How many sides are there altogether in 3 nonagons and 1 octagon?

    35

    Each nonagon has 9 sides and a octagon has 8 sides: 3 × 9 + 8 = 35.

  2. 2. How many sides are there altogether in 3 hexagons and 1 heptagon?

    25

    Each hexagon has 6 sides and a heptagon has 7 sides: 3 × 6 + 7 = 25.

  3. 3. How many sides are there altogether in 5 octagons and 1 triangle?

    43

    Each octagon has 8 sides and a triangle has 3 sides: 5 × 8 + 3 = 43.

  4. 4. How many sides are there altogether in 4 squares and 1 pentagon?

    21

    Each square has 4 sides and a pentagon has 5 sides: 4 × 4 + 5 = 21.

  5. 5. How many sides are there altogether in 4 hexagons and 1 decagon?

    34

    Each hexagon has 6 sides and a decagon has 10 sides: 4 × 6 + 10 = 34.

  6. 6. How many sides are there altogether in 4 hexagons and 1 hexagon?

    30

    Each hexagon has 6 sides and a hexagon has 6 sides: 4 × 6 + 6 = 30.

  7. 7. How many sides are there altogether in 1 square and 1 hexagon?

    10

    Each square has 4 sides and a hexagon has 6 sides: 1 × 4 + 6 = 10.

  8. 8. How many sides are there altogether in 2 octagons and 1 decagon?

    26

    Each octagon has 8 sides and a decagon has 10 sides: 2 × 8 + 10 = 26.

  9. 9. How many sides are there altogether in 4 squares and 1 square?

    20

    Each square has 4 sides and a square has 4 sides: 4 × 4 + 4 = 20.

  10. 10. How many sides are there altogether in 4 decagons and 1 decagon?

    50

    Each decagon has 10 sides and a decagon has 10 sides: 4 × 10 + 10 = 50.

  11. 11. How many sides are there altogether in 5 octagons and 1 pentagon?

    45

    Each octagon has 8 sides and a pentagon has 5 sides: 5 × 8 + 5 = 45.

  12. 12. How many sides are there altogether in 4 decagons and 1 hexagon?

    46

    Each decagon has 10 sides and a hexagon has 6 sides: 4 × 10 + 6 = 46.

12 questions · Seed 66 · Age guidance, not curriculum certification
Worksheet StudioPractice pack · Ages 4-6

Combined sides of polygons

Take your time. Show your thinking.

  1. 1. How many sides are there altogether in 3 nonagons and 1 octagon?

    3 · 1 · Combined sides of polygons

  2. 2. How many sides are there altogether in 3 hexagons and 1 heptagon?

    3 h · 1 h · Combined sides of polygons

  3. 3. How many sides are there altogether in 5 octagons and 1 triangle?

    5 · 1 · Combined sides of polygons

  4. 4. How many sides are there altogether in 4 squares and 1 pentagon?

    4 s · 1 · Combined sides of polygons

  5. 5. How many sides are there altogether in 4 hexagons and 1 decagon?

    4 h · 1 · Combined sides of polygons

  6. 6. How many sides are there altogether in 4 hexagons and 1 hexagon?

    4 h · 1 h · Combined sides of polygons

  7. 7. How many sides are there altogether in 1 square and 1 hexagon?

    1 s · 1 h · Combined sides of polygons

  8. 8. How many sides are there altogether in 2 octagons and 1 decagon?

    2 · 1 · Combined sides of polygons

  9. 9. How many sides are there altogether in 4 squares and 1 square?

    4 s · 1 s · Combined sides of polygons

  10. 10. How many sides are there altogether in 4 decagons and 1 decagon?

    4 · 1 · Combined sides of polygons

  11. 11. How many sides are there altogether in 5 octagons and 1 pentagon?

    5 · 1 · Combined sides of polygons

  12. 12. How many sides are there altogether in 4 decagons and 1 hexagon?

    4 · 1 h · Combined sides of polygons
12 questions · Seed 66 · Age guidance, not curriculum certification
Worksheet StudioAnswer key · Ages 4-6

Combined sides of polygons

Answers and reasoning. Review before teaching.

  1. 1. How many sides are there altogether in 3 nonagons and 1 octagon?

    35

    Each nonagon has 9 sides and a octagon has 8 sides: 3 × 9 + 8 = 35.

  2. 2. How many sides are there altogether in 3 hexagons and 1 heptagon?

    25

    Each hexagon has 6 sides and a heptagon has 7 sides: 3 × 6 + 7 = 25.

  3. 3. How many sides are there altogether in 5 octagons and 1 triangle?

    43

    Each octagon has 8 sides and a triangle has 3 sides: 5 × 8 + 3 = 43.

  4. 4. How many sides are there altogether in 4 squares and 1 pentagon?

    21

    Each square has 4 sides and a pentagon has 5 sides: 4 × 4 + 5 = 21.

  5. 5. How many sides are there altogether in 4 hexagons and 1 decagon?

    34

    Each hexagon has 6 sides and a decagon has 10 sides: 4 × 6 + 10 = 34.

  6. 6. How many sides are there altogether in 4 hexagons and 1 hexagon?

    30

    Each hexagon has 6 sides and a hexagon has 6 sides: 4 × 6 + 6 = 30.

  7. 7. How many sides are there altogether in 1 square and 1 hexagon?

    10

    Each square has 4 sides and a hexagon has 6 sides: 1 × 4 + 6 = 10.

  8. 8. How many sides are there altogether in 2 octagons and 1 decagon?

    26

    Each octagon has 8 sides and a decagon has 10 sides: 2 × 8 + 10 = 26.

  9. 9. How many sides are there altogether in 4 squares and 1 square?

    20

    Each square has 4 sides and a square has 4 sides: 4 × 4 + 4 = 20.

  10. 10. How many sides are there altogether in 4 decagons and 1 decagon?

    50

    Each decagon has 10 sides and a decagon has 10 sides: 4 × 10 + 10 = 50.

  11. 11. How many sides are there altogether in 5 octagons and 1 pentagon?

    45

    Each octagon has 8 sides and a pentagon has 5 sides: 5 × 8 + 5 = 45.

  12. 12. How many sides are there altogether in 4 decagons and 1 hexagon?

    46

    Each decagon has 10 sides and a hexagon has 6 sides: 4 × 10 + 6 = 46.

12 questions · Seed 66 · Age guidance, not curriculum certification