singapore 3rd grade math worksheet: 17 area and perimeter...

Singapore 3rd Grade Math Worksheet: 17

Area and Perimeter

Name:_____________________________ Date:________________

Math Story Problem 1

The prawns in my aquarium wanted to see who was the toughest. They

decided to hold a wrestling match. They built a ring in my bedroom with a

perimeter of 70 cm. The length of the ring was 20 cm. a) What was the breadth of the ring? b) What was the area?


I had a pet cockroach which I loved very much. I made a bed for my dear cockroach last month. The perimeter of the bed was 10 cm. The breadth of the bed was 2 cm.

a) What was its length? b) What was its area?

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A dragon caught a handsome knight and chained him in its cave. A warrior

princess entered the cave, killed the dragon and married the knight. She built a beautiful rectangular castle for him. The perimeter of the castle was 100 m. The

length of the castle was 40 m. a) What was its breadth? b) What was its area?


Dr. Frankenstein created a hairy monster with an ugly rectangular face. The perimeter of the

ugly monster's face was 108 cm. The breadth of its face was 19 cm. How much longer was

the length than the breadth of the ugly monster's face?


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A wealthy patient who went for a brain scan in a nearby hospital was

found to be stark raving mad. He jumped out of the gurney he was lying on and ran to a jewelry shop to buy a golden fence to build a paddock for his

blind horses. Each meter of the golden fence cost $8. If the dimensions of his paddock were 8 m by 13 m, how much did he pay for the golden fence?


My sister wanted to have a pool party. To spice things up a bit she decided to place vicious 1

m crocodiles nose to tail around our swimming pool. The dimensions of our pool were 16 m

by 9 m. She went to a pet shop to buy the crocodiles. If each crocodile cost $6, how much

money did she spend on the crocodiles?



Little Layla asked her dad to build a playground for her. Her father built a

playground measuring 26 m by 19 m. He put a wall around the playground but left a 3 m gap at the front and back of the playground for the children to enter. He made the wall out of sun-dried cow dung. He bought the cow

dung from Farmer Fred. Each meter of wall cost him $9. Now Layla is lonely because no one wants to play in the playground with her - it is too smelly. How much did her dad pay for the cow dung?


Peter was terrified of burglars. He bought some fierce cobras and laid them end to end around the perimeter of his mansion. He didn't lay any cobras across his front door, back door and 2

side doors. The width of his front door and back door was 4 m each. The width of his 2 side

doors was 2 m each. The dimensions of his mansion were 32 m by 17 m. He never had to worry about burglars after that. If each cobra cost him $7, how much did he spend on the

cobras?



Kelvin Knight defeated a medusa and a gargoyle in an arena with 1 thousand

screaming spectators. The length of the arena was 4 times as long as its breadth. The perimeter of the arena was 200 m. a) What was the breadth?

b) What was the area?


A group of boys made a sandbox to play marbles in. The length of the sandbox was 3 times as long as its breadth. The perimeter of the sandbox was 24 m.

a) What was the breadth of the sandbox?




Lisa and Lucy decided to have a snowball fight. Lisa built a huge snow fort. The

length of the snow fort was 8 times as long as its breadth. The perimeter of the snow fort was 90 m. a) What was the length of the snow fort?

b) What was the area of the snow fort?


Ernest bought a big piece of land because he wanted to rear trolls. Tough troll hides were in huge demand. The perimeter of the farm was 240 km. The length of the farm was twice as

long as the breadth.

a) What was the length of the farm? b) What was the area?



Fiona took part in a motorcycle race. The race was held in a rectangular track.

The perimeter of the track was 52 km. The length of the track was 12 km longer than the breadth. a) What was the breadth of the track?

b) What was its area?


I built an ant farm for my brother yesterday. The perimeter of the farm was 76 cm. The length of the farm was 28 cm longer than its breadth.

a) What was the length of the farm?

b) What was the area of the farm?



Richard built a pool and put some hungry sharks in it. He told his friends that

anyone who could canoe across the pool without being eaten by the sharks would get a million dollars. The perimeter of the pool was 106 m. The length of the pool was 41 m more than the breadth. Four people tried to canoe

across but they died horribly. Finally, Marlon crossed the pool and won the million dollars. a) What was the length of the pool?



My uncle's monkey recently got married. So my uncle built a huge cage to house the monkey

and its wife. The perimeter of the cage was 202 m. The length of the cage was 83 m more

than the breadth. a) What was the length of the cage?




Bobby Bloodhound is a police dog. The police use him to catch

smugglers who try to bring in drugs from across the border. Bobby Bloodhound caught a smuggler yesterday. The smuggler had drugs in his tiny suitcase. The perimeter of the suitcase was 70 cm. The length of the

suitcase was 17 cm longer than the breadth. a) What was the length of the suitcase? b) What was the area?


Arkad the Sorcerer has a tiny book on necromancy that he uses to summon the dead from

their graves. The perimeter of the book is 58 cm. The length of the book is 21 cm longer than the breadth. a) What is the length?

b) What is the area?



Victor Wolf is a successful businessman. He has a mobile phone that he uses to

call his customers. The perimeter of the mobile phone is 104 cm. The length of the phone is 36 cm longer than the breadth. a) What is the length?



When I was picking my nose last night, a rectangular gem fell out of my right nostril. I wiped

away the mucus from the lovely gem and eagerly measured the face of the gem. The

perimeter was 208 cm. The length was 94 cm longer than the breadth. a) What is the length of the gem?



Answers

Q1a - 15 cm; Q1b - 300 cm2; Q2a - 3 cm; Q2b - 6 cm

2

Q3a - 10 m; Q3b - 400 m2; Q4 - 16 cm; Q5 - $336

Q6 - $300; Q7 - $756; Q8 - $602; Q9a - 20 m

Q9b - 1600 m2; Q10a - 3 m; Q10b - 27 m

2; Q11a - 40 m

Q11b - 200 m2; Q12a - 80 km; Q12b - 3200 km

2; Q13a - 7 km

Q13b - 133 km2; Q14a - 33 cm; Q14b - 165 cm

2; Q15a - 47 m

Q15b - 282 m2; Q16a - 92 m; Q16b - 828 m

2; Q17a - 26 cm

Q17b - 234 cm2; Q18a - 25 cm; Q18b - 100 cm

2; Q19a - 44 cm

Q19b - 352 cm2; Q20a - 99 cm; Q20b - 495 cm

2


singapore 3rd grade math worksheet: 17 area and perimeter...

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