For S7 Maths Challenges

I am heartened to see all of you trying so enthusiastically to solve the problem. Do remember to show your STAR values at all time :)

In a school hall, chairs were arranged in rows such that there were exactly 9 chairs in each row. For a concert, Mr Ong brought 6 more chairs into the school hall and rearranged all the chairs. There are now exactly 7 chairs in each row and 12 more rows than before. 

How many chairs are there in the school hall for the concert? 

Think through in simple English ... Break it down one sentence at a time. 

In a school hall, chairs are arranged in rows such that there were exactly 9 chairs in each row. 

In simple English ... there were rows of chairs, how many chairs in each row?

For a concert, Mr Ong brought 6 more chairs into the school hall and rearranged the chairs. 

Think through ... the room already has _____ X 9 = ______ chairs and now

Mr Ong added 6 more chairs

AND REMEMBER, HE REARRANGED the hall again.

There are NOW (new arrangement) 7 chairs in each row 

and 12 more rows than before.

Can we use any of these information to come up with any number statements?

Dear all, think through do not give up so easily :) 

Always take one step at a time :) 

Nothing is Impossible if You TRY! 

Mrs R 

S9 More Maths Supplements

Maths supplements new challenges :)

Try me ... I know you can do it :)

There are 4 rows of chairs with 6 chairs in each row. Miss Li wants to rearrange all the chairs to form a square. She wants the same number of chairs on each side of the square. How many chairs must she put on each side of the square? 

Think through which method would be the most efficient method to solve this question. Comment on it and if you like you may set parallel questions for your friends to solve. Have fun :) 

Mrs R

S8 Maths Supplements

Maths supplements new challenges :)

Try me ... I know you can do it :)

Evan wanted to put some apples into boxes. If he puts 10 apples into each box, he would have 5 apples left over. If he puts 12 apples into each box, he would be short of 5 apples. How many apples did Evan have? 

Think through which method would we use to solve this question. Comment on it and if you like you may set parallel questions for your friends to solve. Have fun :) 

Mrs R

Mini Brain Supplements for Decimals

Dear all,

Try this out and write your answers in a foolscap paper :)
Remember save the trees do not waste too much paper.

1.         In 28.47, the digit ‘7’ has the value of _______________.

            (1)       70                                                 (2)       7

 (3)       0.7                                                (4)       0.07                          

2.         In 125.436, which digit is in the tenth place?

            (1)       5                                                   (2)       2

 (3)       3                                                   (4)       4                                 

3.         Which one of the following has the least value?

            (1)       5.749                                                  (2)       5.497

(3)       5.794                                                  (4)       5.479                          (          )

4.         4 hundreds, 5 tenths and 6 thousandths is ______________.

            (1)       450.006                                     (2)       400.650

(3)       400.506                                      (4)       400.056                       

5.         Tom weighs 23.3 kg. Susan is 0.09 kg lighter than Tom.

            What is Susan’s weight? 

           

           (1)       22.30                                                  (2)       23.11

(3)       23.29                                                  (4)       24.10                          (          )   

6.         72 tenths is equal to _______________.

            (1)       0.072                                                  (2)       0.72

(3)       7.2                                                       (4)       72                                (          )           

7.         Sarah spent $87.60.

            She spent $5.70 less than Darren.

            How much did they spend altogether?

            (1)       $81.90                                                (2)       $93.30

(3)       $169.50                                              (4)       $180.90                      (          )

8.       Lionel bought a soft toy at $28.90. He paid the cashier $50.

How much change did he receive from the cashier?

(1)       $21.10                                         (2)       $21.90

(3)       $22.10                                        (4)       $22.90                        (          )

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.         What is the sum of 12 tenths and 7 hundredths?

                                                                                                 

2.         Mark ran 3.1 km on Monday. On Tuesday, he ran 0.5 km more than the distance he ran on Monday. What was the total distance he ran on these two days?

                                                                                                 

3.         Express 0.18 as a fraction in its simplest form.

                                                                                                Answer: _______________

4.         What is the sum of 2.34 and 9.9?

                                                                                                Answer: _______________

5.         Mrs Raju bought 3.41 kg of meat. She bought 2.12 kg of vegetables. How much more meat did she buy than vegetables?

           

                                                                                                Answer: _______________ kg

6.         Write 6 ones, 33 tenths and 7 thousandths in numerals.

                                                                                                Answer: _______________

7.         The difference in value between the digit 6 in 0.625 and 20.436 is __________.

Answer: _______________

8.         Mrs Muthu bought 42 kg of oranges. She used 15.92kg of oranges to make fruit juice. How many kilograms of oranges had she left? Round off the answer to one decimal place.

Answer: _______________ kg

9.         ♥ + ♥ + ☺ = 3.5

♥ + ☺ = 2.3

☺ = ?

Answer: ☺ =_______________

10.       Arrange the following decimals. Begin with the greatest.

            0.025, 0.25, 0.225

                                                                                                Answer: _______________

S7 Maths Supplement :) yummy!!

Maths supplement continues ...

S7:

In a school hall, chairs were arranged in rows such that there were exactly 9 chairs in each row. For a concert, Mr Ong brought 6 more chairs into the school hall and rearranged all the chairs. There are now exactly 7 chairs in each row and 12 more rows than before.

How many chairs are there in the school hall for the concert?

Have fun! :)
Mrs R

Interesting video on Shadows :)

Dear all please go to this url and view this interesting video on shadows :)

http://www.youtube.com/watch?v=IjysmHSAfnw

Go check it out!

Have fun!
Mrs R

S6 Maths Supplement :) yummy!!

Maths supplement continues ...

S6:
A group of girls shared some sweets among themselves. They tried taking 11 sweets each, but found that the last girl had only 6 sweets. When each girl took 8 sweets, there were 25 sweets left over. 
How many sweets were there altogether?

Have fun! :)
Mrs R