| Question | Answer |
| 1. ? + 87 = 100 | 13
|
2. 100 - ? = 40 | 60
| 3. 67 + ? =100 | 33
| 4. The perimeter of a rectangle is 140cm. What could its sides be? | e.g. only 50 + 50 + 20 + 20
| 5. A square has a perimeter of 160cm. What do its sides measure? | 40cm
| 6. A length of a square meaures 60cm. What is the perimeter of the square? | 240cm
| 7. Draw a rectangle. One of its sides measures 40cm. Another of its sides measures 90cm. What is the perimeter of the rectangle? | 260cm
| 8. A book has the following measurements : Length 25cm and its width 10cm. What is the perimeter of the book? | 70cm
| 9. 32 + 40 + ? = 100 | 28
| 10. 6 + 7 + 20 + ? = 100 | 67
| 11. A square has a perimeter of 200cm. What do its sides measure? | 50cm
| 12. Draw a rectangle. One of its sides measures 20cm. Another of its sides measures 1m. What is the perimeter of the rectangle? | 240cm/2.40m
| 13. A length of a square meaures 1.2m. What is the perimeter of the square? | 4.8m/480cm
| 14. A door has the following measurements : Length 250cm and its width 100cm. What is the perimeter of the door? | 700cm/7m
| 15. The perimeter of a rectangle is 450cm. What could its sides be? | e.g. only 200 + 200 + 25 + 25
| 16. 100= 69 + ? | 31
| 17. 100= 76 + ? | 24
| 18. 100 - ? = 90 | 10
| 19. A pencil case has the following measurements : Length 15cm and its width 5cm. What is the perimeter of the pencil case? | 40cm
| 20. 10 + 40 + ? = 100 | 50 |
