P5 Math: Carnival Bus

There are 836 youths in a carnival. 7/10 of the males and 7/8 of the females took a bus to the carnival. The number of males who did not take the bus is twice the number of females who did not take the bus. How many females did not take the bus?

P5 Math: Age Problem

Jane was thrice as old as Amy 4 years ago. 6 years later, the ratio of Jane's age to Amy's age will be 7:4. Find the ratio of Jane's age to Amy's age 2 years later.

P5: Triangles

The figure below shows two identical right-angled triangles overlapping each other. Find the area of the blue region. 

Solution:

The two triangles are identical,
The yellow region is overlapping and same in area or size.
Therefore, the area of the blue region is equal to the white region.
The area of the blue region =  9 × 6 + ½ × 3 × 6 = 63 cm2

P5 Math: Sarah's piggy bank

Sarah had some money in the piggy bank. On Monday, she took 2/5 of the money to buy a present. She had $78 left and she put it back into the piggy bank. On Tuesday, she took 3/8 of the money to buy some story books. She had $28.80 left and she put it back into the piggy bank. After that, she found that there was $246.30 in the piggy bank. How much money did she have in the piggy bank at first?

Answer:

P5 Math: Tammy's apples and pears

Tammy bought some apples and pears. The number of apples to the number of pears is 2:1. An apple cost $1.50 and a pear cost $0.90. Tammy spent $936. How many pears did she buy ?

Answer:

It is Very True

 

P5 Math: Tickets to Sell

Xavier and Yvonne had a total of 1105 tickets to sell. Xavier sold 3/5 of his tickets and Yvonne sold 3/7 of her tickets. They were left with the same number of tickets. How many tickets did Xavier sell?

Answer:

P5 Math: Foreign Stamps

Daniel had 400 stamps in his stamps collection. 3/10 of them were foreign stamps. Edmund had 600 stamps and 13/20 of them were foreign stamps. After exchanging some stamps with each other, 1/4 of Danny's stamps and 3/4 of Edmund's stamps were foreign stamps. How many stamps did Danny get from Edmund?

P5 Math: Menon Book and Magazine

 At first Mr. Menon had 380 more books than magazine in his bookshop. He then sold 1/4 of the books and 3/5 of the magazines, The number of books left was 600 more than the number of magazines left. What was the total number of books and magazines Mr. Menon had at first?

P5 Math: Shawn salary

Shawn spent $420 of his salary on a bicycle and gave some money to his parents. He then spent 3/7 of the remaining salary on food and saved the rest. The amount he saved was 1/3 of his salary. The amount he gave his parents was 1/4 of his salary.

(a) What fraction of Shawn's salary was spent on food ?

(b) How much was Shawn's salary ?

P5 Math: Cookies

Every child was given 2 bags of cookies. Each bag contained either 10 chocolate cookies or 15 butter cookies. There were 88 children and they received 2345 cookies altogether. How many butter cookies did the children receive?

P5 Math: Calvin and Susie

Calvin and Susie had some game cards at first. Calvin gave 1/4 of his cards to Susie. After that Susie gave 1/5 of her cards to Calvin. In the end, Calvin had 45 cards and Susie had 36 cards. How many cards did Calvin have at first ?

Ratio: Sammy and Tim

Just copy and paste from PSLE Support FB group. Need to digest 😀

P5 Math: Simple Ratio

The ratio of the number of David's cards to that of Peter's cards was 2:3 at first. After Peter gave 1/2 of his cards to David, he had 24 fewer cards than David. How many cards that David and Peter each have at first ?

P5 Math: Sack A and Sack B

Sack A and Sack B contained 10 1/2 kg of sand altogether. 3/7 of the sand from sack A was transferred into sack B. 1/6 of the sand from sack B was then transferred into sack A. Both sacks contained an equal mass of sand in the end. How many kilograms of sand were there in each sack at first ? Give your answers in mixed number ?

P5 Math: Tank A and Tank B

Tank A and Tank B contained 12.5L of water altogether. 3/5 of the water from tank B was transferred into tank A. 4/9 of the water from Tank A was then transferred into tank B. Both tanks contained an equal volume of water in the end. How many litres of water did each tank contain at first? Give answer in mixed number.

P5 Math: Blue and Green Stickers

Blue stickers were sold in packets of 15 each. Green stickers were sold in packets of 40 each. Rachel bought 5 packets of blue stickers and some packets of green stickers. Farah bought 13 packets of blue stickers and some packets of green stickers. Both girls bought the same total number of packets of stickers.

a) How many more green stickers did Rachel buy than Farah ?

b) After Rachel used 3/5 of her green stickers and Farah used half of her green stickers, they both had 452 green stickers left altogether. How many blue and green stickers did Farah buy altogether?

P5 Math: Anna and Sue

Anna and Sue folded paper cranes to raise funds for an event. 1/3 of Anna's paper cranes was 16 more than 1/4 of Sue's paper cranes. After a few days, Anna folded more paper cranes and her total increased by 1/3. Sue had to throw away 1/2 of hers as they were torn. At the end, Anna had 82 paper cranes more than Sue. How many paper cranes were there in the end?

Solution:

P5 Math: Samantha and Megan

Samantha and Megan have some money. If Samantha spends $60 each day and Megan spends $120 on each day, Samantha will have $680 left when Megan has spent all her money. If Samantha spends $120 each day and Megan spends $60 on each day, Samantha will have $140 left when Megan has spent all her money.

How much money does each girl have?

Solution:

Lenovo: Do Not Update to Windows 10 or Windows 11 22H2

It happened to us if you have these types of 2-years Lenovo laptop

• Lenovo 81WB001MSB
• Lenovo 81TL0007SB

• NEVER update your Windows 10 or Windows 11 to patch 22H2.
• You are still able to connect to Wifi but it cannot go to Internet. I WARN YOU !

I spend nearly SGD200 due to 2x service repair just to reinstall Windows and waste time going to service center. Luckily it does not happen for second time ... oh it did happen, but I manage to bring it back to previous stable (working) state.

If it happens to you, try this method.

• Go to Windows Update setting (or short cut Windows + I)
• Choose Advance options
• Choose Go back

Wait few seconds till the laptop reacts. It goes several rebooting and the process takes 10 - 15 minutes.

 Good luck !