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Primary 4 Maths: Worksheet 15

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Primary School Maths: Grade 4: Worksheet 15
Challenging Problems

Greedy Greg bought 130 furry hot dogs and 90 turkey pizzas this morning. He gobbled up 36 hot dogs and bought some more turkey pizzas in the afternoon. After that, he had twice as many pizzas as hot dogs. How many pizzas did he buy?

Primary School Maths: Free Math Word Problems: 2

My sister was playing Monopoly with 143 crocodiles and 127 anacondas in her bedroom. The anacondas swallowed 65 crocodiles when she was not looking. Later my sister went to a swamp and caught more anacondas. Now she has thrice as many anacondas as crocodiles. How many anacondas did she catch?

Primary 4 Maths: Singapore Math: Free Math Problems: 3

My uncle caught 222 clams and 168 lionfish when he went scuba-diving yesterday. We grilled and ate 47 clams for dinner. Later that night my uncle went scuba-diving again and caught some more lionfish. Now he has 4 times as many lionfish as clams. How many lionfish did he catch at night?

Primary School Maths: Free Math Word Problems: 4

Witch Wilda sells warts and moles for a living. She had 341 warts and 191 moles last week. She sold 245 warts to Sorcerer Shaun and bought some more moles from Wizard Wally. Now she has 7 times as many moles as warts. How many moles did she buy from Wizard Wally?

Primary 4 Maths: Singapore Math: Free Math Problems: 5

I have three sisters - Ginny, Jenny and Penny. They have 439 pimples on their oily faces altogether. Ginny and Jenny have a total of 341 pimples. Jenny and Penny have a total of 304 pimples. How many more pimples does Jenny have than Ginny?

Primary School Maths: Free Math Word Problems: 6

Farmer Fred had altogether 596 dancing chickens which he kept in his barn. Some were blue, some were green and the rest were purple. He had a total of 268 blue and green chickens. The total number of purple and green chickens was 401. How many fewer green chickens than purple chickens did the farmer have?

Primary 4 Maths: Singapore Math: Free Math Problems: 7

Henry was a terrible golfer. When he played golf yesterday, he accidentally hit a total of 691 cobras, lions and gophers on their heads with his golf balls. He hit a total of 563 cobras and lions on their heads. He hit altogether 335 lions and gophers on their poor heads. How many more cobras than gophers got a terrible headache yesterday?

Primary School Maths: Free Math Word Problems: 8

Sandra collected insects as a hobby. She had altogether 856 cockroaches, grasshoppers and beetles in a glass cage. She had 577 cockroaches and grasshoppers. There were a total of 436 grasshoppers and beetles. How many more cockroaches than grasshoppers did she have?

Primary 4 Maths: Singapore Math: Free Math Problems: 9

Farmer Fred sold 1/3 of his horses to Vicious Wolf last week. He sold 1/3 of his remaining horses to Slimy Snake this week. He had 48 horses left after that.
a) How many horses did he sell altogether?
b) If he sold 4 horses for $2.80, how much money did he make?

Primary School Maths: Free Math Word Problems: 10

Minotaur Mulo sells sharp steel horns to bulls that want to gore pesky matadors. He sold 2/5 of his horns last weekend and the remaining 2/3 of his horns this weekend. He had 42 horns left after that.
a) How many horns did he sell altogether?
b) If he sold 6 horns for $5.90, how much money did he make?

Primary 4 Maths: Singapore Math: Free Math Problems: 11

Inventor Idris invented an invisible cloak last month. He decided to sell the cloaks to the police who could use them to nab criminals red-handed. Idris sold 1/4 of his cloaks on Monday and the remaining 1/2 of the cloaks on Tuesday. He had 75 cloaks left.
a) How many cloaks did Idris sell?
b) If Idris sold 5 cloaks for $8.40, how much money did he earn altogether?

Primary School Maths: Free Math Word Problems: 12

Filomena went fishing and caught some ferocious sharks. She went to the market and sold 7/9 of the sharks to Balu who wanted to make shark pizza. She sold the remaining 2/5 of the sharks to Raju who wanted to make spicy shark curry. After that Filomena had 48 sharks left. How many sharks did Filomena sell?

Primary 4 Maths: Singapore Math: Free Math Problems: 13

When King Klong entered his bathtub to take a bath he was shocked. There were some piranhas and barracudas swimming inside. In fact, there were 5 times as many piranhas as barracudas. A short while later, the queen entered the bathroom with 27 live barracudas in her hands and dropped them into the bathtub. After that, there were 1/2 as many barracudas as piranhas.
a) How many barracudas did the king finally bathe with?
b) How many fish were in the bathtub before the queen entered the bathroom?

Primary School Maths: Free Math Word Problems: 14

My dirty mongrel had thrice as many fleas as ticks on his mangy body last week. When the dog went missing for two days it came back with an extra 38 big fat ticks. Now it has twice as many fleas as ticks on its itchy body.
a) How many ticks does it have now?
b) How many fleas and ticks did my dog have before it went missing?

Primary 4 Maths: Singapore Math: Free Math Problems: 15

Mobster Moby and Gangster Gary robbed a bank last Wednesday. When they went back home to count their money, they found that Moby had 7 times as much money as Gary. Moby had a severe case of diarrhea on Thursday. So poor Gary robbed another bank that day without his friend to help him. Gary stole $85 on Thursday. Now he has 1/2 as much money as Moby.
a) How much money does Gary have now?
b) How much money did they have in total on Wednesday?

Primary School Maths: Free Math Word Problems: 16

Grandma Shark had 8 times as many teeth as Grandpa Shark and used to brag about it. Last night a tooth fairy gave Grandpa Shark 145 razor-sharp teeth. Now Grandpa Shark has 3/4 as many teeth as Grandma Shark.
a) How many teeth does Grandpa Shark have now?
b) How many teeth did the two of them have in total before the tooth fairy granted Grandpa Shark his wish?

Primary 4 Maths: Singapore Math: Free Math Problems: 17

Captain Crook attacked a merchant ship and captured the passengers in the ship. At first there were thrice as many male passengers as female passengers. However, the evil captain threw 285 male passengers into the sea to feed the sharks. After that, there were twice as many female passengers as male passengers left. What was the total number of passengers before the unlucky ones became shark bait?

Primary School Maths: Free Math Word Problems: 18

Olly Ogre had thrice as many pickled human fingers as pickled human toes in his fridge. When his best friend, Izzy Imp, came over, Olly gave him 664 pickled human fingers. Now Olly has thrice as many pickled human toes as pickled human fingers. How many toes and fingers did Olly have in his fridge before Izzy came over?

Primary School Maths: Singapore Math: Free Math Problems: 19

Punk Porty had twice as many electric guitars as acoustic guitars. However his rock concerts were so terrible last year that the audience in all his concerts booed at him. The enraged punk smashed 294 electric guitars. He had 4 times as many acoustic guitars as electric guitars after that. How many guitars did the punk have in the beginning?

Primary School Maths: Free Math Word Problems: 20

Hideous Helga had twice as many pimples as boils on her ugly face. She had a wedding coming up so she pinched 324 pus-filled pimples. She had 5 times as many boils as pimples after that. How many boils and pimples did she have before she pinched some of the pimples.

This Primary 4 Maths Worksheet
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Here are the answers!

Answers to Primary School Maths: Primary 4 Worksheet 15.

Q1 - 98, Q2 - 107, Q3 - 532, Q4 - 481

Q5 - 71, Q6 - 255, Q7 - 228, Q8 - 263

Q9a - 60, Q9b - $42, Q10a - 168, Q10b - $165.20

Q11a - 125, Q11b - $210, Q12 - 312

Q13a - 45, Q13b - 108, Q14a - 114, Q14b - 304

Q15a - 119, Q15b - 272, Q16a - 174, Q16b - 261

Q17 - 456, Q18 - 996, Q19 - 504, Q20 - 540

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