proudly presents heuristics approach ace ratio method (arm )
Post on 11-Jan-2016
23 Views
Preview:
DESCRIPTION
Adrian Ng Principal Trainer. Proudly Presents Heuristics Approach Ace Ratio Method (ARM ) Solving Challenging Primary Mathematical Problems. Before and after concept ace ratio method (ARM). Single unchanged quantities. - PowerPoint PPT Presentation
TRANSCRIPT
Proudly PresentsProudly Presents
Heuristics ApproachHeuristics ApproachAce Ratio Method Ace Ratio Method
(ARM)(ARM)Solving Challenging Primary Mathematical ProblemsSolving Challenging Primary Mathematical Problems
Adrian NgAdrian NgPrincipal TrainerPrincipal Trainer
BEFORE AND AFTER CONCEPT
ACE RATIO METHOD (ARM)
2
SINGLE UNCHANGED QUANTITIES
3
In a farm, there were as many chickens as ducks. After 49 ducks were sold, the percentage of ducks dropped to 40%. Find the number of chicken in the farm.
4
First Change End
Chicken
Duck
4u
5u
5
4
- 49
100
40
)(5
)(2
Total
Duck
3p
2p
x312u
x412u
x315u
x48u
15u-8u 497u 491u 7
12u 12x7 = 84
Ans: 84 chickens
5
Thank You
top related