Maths Game
Make use of any 3 different maths operators to generate the number 18.
Rule of the game: The last maths operator has to be the first for the next person to continue, and no numbers in the operation are to be the same.
Start: 18 ==> 40 / 2 - 5 + 3 ==> .......
Happy thinking
Wednesday, September 1, 2010
Saturday, August 28, 2010
Maths Game - "Reversity"
This is a maths game that I strongly recommend to anyone who like to keep their brain active.
You will find it wonderful and importantly, it is free and requires only a piece of paper and a pencil to go with it.
This activity is not new. I have seen many with deviation.
Here I will share with you the concept.
CONCEPT: The target ( a list of number from 1 to 10, or similar list) is to be produced using a set of pre-defined numbers, or a certain number only. Any mathematical operation can be utilised to achieve the target.
Example:
To produce a list of number from 0 to 10 using ALL the numbers 1, 2, 3 and 4, with any of the mathematics operators, + , -, /, x, ) ( and exponential.
Here it goes...
0 = 4 - 3 - ( 2 - 1 )
1 = (4 - 2 )/ (3 - 1 )
2 = (4 + 21) / 3
3 = 41 + 2 -3
4 = 4 x 2 - 3 - 1
5 = 4 x 2 - 31
6 = 4 + 2 / 13
7 = 4 + 3 / 12
8 = 4 x 2 / 13
9 = 4 x 2 + 13
10 = 4 x 2 + 3 - 1
This is a simple maths game, but it involves the application of the basic principle of mathematics to achieve the targeted number for a given set of constraints.
"Reversity" - a reversal of the mathematical procedure.
Another tougher Reversity game is to have only the number 4 used.
Any deviation can be created to generate different levels of difficulties. Explore it!
Keep your mind in reverse gear ....... ! s r e e h C (reversed)
http://mathsisinteresting.blogspot.com/search/label/mental%20maths
You will find it wonderful and importantly, it is free and requires only a piece of paper and a pencil to go with it.
This activity is not new. I have seen many with deviation.
Here I will share with you the concept.
CONCEPT: The target ( a list of number from 1 to 10, or similar list) is to be produced using a set of pre-defined numbers, or a certain number only. Any mathematical operation can be utilised to achieve the target.
Example:
To produce a list of number from 0 to 10 using ALL the numbers 1, 2, 3 and 4, with any of the mathematics operators, + , -, /, x, ) ( and exponential.
Here it goes...
0 = 4 - 3 - ( 2 - 1 )
1 = (4 - 2 )/ (3 - 1 )
2 = (4 + 21) / 3
3 = 41 + 2 -3
4 = 4 x 2 - 3 - 1
5 = 4 x 2 - 31
6 = 4 + 2 / 13
7 = 4 + 3 / 12
8 = 4 x 2 / 13
9 = 4 x 2 + 13
10 = 4 x 2 + 3 - 1
This is a simple maths game, but it involves the application of the basic principle of mathematics to achieve the targeted number for a given set of constraints.
"Reversity" - a reversal of the mathematical procedure.
Another tougher Reversity game is to have only the number 4 used.
Any deviation can be created to generate different levels of difficulties. Explore it!
Keep your mind in reverse gear ....... ! s r e e h C (reversed)
http://mathsisinteresting.
3 squire Total = 15
| 8 | 1 | 6 | |||
| 3 | 5 | 7 | |||
| 4 | 9 | 2 | |||
1241/9=137.80
1 1+2 3+4 7+1
1 3 7 8
123
123 add 123
123123
Divide by 7, 11, 13 ( 1001 )
= 123
Use Match sticks
456
4 = 4 sticks
5 = 5 sticks
6 = 6 sticks
671 x 992
329 x 008 = 2 632
( 6+3=9 7+2=9 1+9=10, 9+0=9 9+0=9 2+8=10 )
671 + 2 - 8 = 665
665632
356x532
| 3 | 5 | 6 | |||
| 1/5 | 2/5 | 3/0 | 5 | ||
| 0/9 | 1/5 | 1/8 | 3 | ||
| 0/6 | 1/0 | 1/2 | 2 | ||
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