S14 supplement

Dear all,

Please try to solve this question. Remember to try it for at least 2 days before you reveal your answers here. Remember to give others a chance to spend some time to solve it. :)
There are some spiders and ants in a container.
20% of the total number of creatures are spiders.
Tom counted a total of 192 legs.
How many spiders and ants are there altogether?

Have fun,
Mrs R

S13 Supplement

Dear all,

Please try to solve this question. Remember to try it for at least 2 days before you reveal your answers here. Remember to give others a chance to spend some time to solve it. :)

May and Dawn each brought some sweets to the class.
Each of them took out the same number of sweets to distribute to their classmates.
If May took out 1/4 of her sweets and gave each of her classmates 6 sweets,
she would have 14 sweets left over.
If dawn took out 1/2 of her sweets and gave each of her classmates 8 sweets,
she would be short of 10 sweets.
How many sweets did each girl have at first?

Have fun,
Mrs R

S12 Maths Supplement

Draw A Model – Add/Subtract The Same (Difference remains the same)

 

At first, Shop A had 156 kg of rice and Shop B had 72 kg of rice.

After  each shop sold the same quantity of rice, the amount of rice that Shop A
had left was 4 times that of Shop B. How many kilograms of rice did Shop A sell?

Solve this, discuss your answer and method. Create one for your friends if you like. :)
Have fun :)
Mrs R

S11 Maths Supplement

Draw a model - comparison


Sheila and Muthu have 80 marbles altogether.
Sheila and Alice have 50 marbles altogether.
Muthu has 4 times as many marbles than Alice.
How many marbles does Sheila have?

Solve this, discuss your answer and method. Create one for your friends if you like. :)
Have fun :)
Mrs R

Mini Decimals Supplement 2

Try these ... I know you can do them :)

Section A ( 20 x 2 marks )

Choose the correct answer for each of the following questions. Write your answer in the brackets provided.

1.         What is the answer when 5.295 is rounded off to 2 decimal places?

(1)       5.20                                                    (2)       5.29

(3)       5.30                                                    (4)       5.39                           

2.         Find the product of 12.3 and 3. What is the value of the digit ‘3’ in the product?

            (1)       0.30                                                    (2)       3.00

 (3)       30.0                                                    (4)       300                                        

3.        Jean has 25 m of ribbon. Linda has 6  m of ribbon. How many metres of ribbon do they have altogether? Express your answer as a decimal.

           (1)       31.01                                                  (2)       31.14

(3)       31.25                                                  (4)       31.75                         

4.         Mr Lim sold 9 vases. Each vase cost $52.50. He distributed his earnings among his 5 children equally. How much does each child receive?

           (1)       $10.50                                                (2)       $94.50

(3)       $262.50                                              (4)       $472.50                     

5.         Subtract 3.92 from the sum of 14.7 and 8.03.

            Round off your answer to 1 decimal place.

           (1)       10.8                                                    (2)       18.8

(3)       22.7                                                    (4)       26.7                           

6.         Find the value of 6.59 x 9.

(1)       6.68                                                    (2)       15.69

(3)       54.51                                                  (4)       59.31                         

7.         The sum of two decimals is 417. If one of them is 4 times the other, what is the

smaller number?

(1)       83.4                                                    (2)       104.25

(3)       250.2                                                  (4)       413.5                         

8.         How many 0.25 are there in 2 ?

(1)       22                                                        (2)       11

(3)       3                                                          (4)       8                                 

Section B ( 20 x 2 marks )

Work out each question and write your answers in the boxes provided.

All working must be shown and give your answers in the units provided.

1.        A box of chocolate costs $8, correct to the nearest dollar. What is the lowest possible price of the box of chocolate?

             

                                                                                                Answer: ______________

2.        Arrange the following in descending order.

            ,                0.63,              0.097,                    

                                                            Answer: _______, _______, _______, _______ .

3.        The product of 11.37 and 6 is ______________.

                                                                                                Answer: ______________

4.        Mark bought 6 goldfish. Each goldfish cost $2.50. Mark gave the cashier two $10 notes. How much change did he receive?

                                                                                    Answer: _______________

5.        Sarah bought 5 pies at $0.50 each. She also bought 3 similar cakes. She spent a total of $10.30. How much did she pay for a piece of cake?

                                                                                                Answer: _______________

6.         The mass of Shelia is 35.3 kg. She is 1.9 kg lighter than Jane. Dorothy is 4.3 kg lighter than Jane. Find the total mass of the 3 girls.

                                                                                                Answer: _______________ kg

7.         Arrange these numbers in descending order.

                        3.25,  3  , 3.05,  3  

                                                            Answer: _______, _______, _______, _______.

8.         If you add 0.1 to a number and round it off to the nearest whole number, the answer is 55. If you add 0.2 to the number and round it off to the nearest whole number, the answer is 56. What is the number?

                                                                                                Answer: _______________

9.      Pack A contains 5 times as much salt as Packet B. Monica adds 0.3 kg of salt to Packet A and 3.5 kg of salt to Packet B. The amount of salt in the two packets is now the same. What was the mass of salt in Packet B at first? Give your answer in kilograms

                                                                                                Answer: _______________ kg

Have fun :)
Mrs R

S10 Maths Supplements

S9 Maths Supplements

Jack has a total of 20 fifty-cent coins and twenty-cent coins.
He has $5.20 altogether. How many twenty-cent coins does he have?

2 students Lynn and Mala presented their working as shown:

Lynn's working:

50 X 20 = $10.00

$10.00 - $5.20 = $4.80

50 ₵ - 20 ₵ = 30 ₵ 

$4.80 ÷ 30 = 16       

Jack has 16 twenty-cent coins.

Mala's working:

Assume all the coins are twenty cent coins.

Therefore,

50 X 20 = 1000 cents

1000 - 520 = 480 extra cents

50 - 20 = 30 cents

480 ÷ 30 = 16 fifty-cent coins

Jack has 16 twenty-cent coins

Whose answer is the best and most logical? Explain your answer. :)

Have fun!

Mrs R

                

Wishes for Miss Chow

Dear All,

Please pen your wishes for Miss Chow. We are sadden to have to see her leave us again. However, we know it is for good reasons so let us pen her some good wishes until she returns to us in 2 years' time. :)

Once you have written I will invite her to come to our blog to take a look :)

Have fun :)
Mrs R