Bryan and Adam have 190 marbles.
Bryan has 60 more marbles than Adam.
Find the number of marbles that Adam has.
- Which model should we draw?
(1) Model Part-whole
(2) Model Comparison
- Is the total given?
(1) Yes
(2) No
- Who gets the shorter bar?
(1) Bryan
(2) Adam
- Number of marbles that Adam has =
(a)
Which model should we draw?
(1) Model Part-whole
(2) Model Comparison
We should draw a (2) Model Comparison.
(b)
Is the total given?
(1) Yes
(2) No
(1) The total is given.
(c)
Who gets the shorter bar?
(1) Bryan
(2) Adam
Bryan has 60 more marbles than Adam.
So, (2) Adam gets the shorter bar.
(d)
If 60 marbles are taken away from Bryan, Bryan and Adam will have the same number of marbles.
Number of marbles that Adam has
= (190 - 60) ÷ 2
= 130 ÷ 2
= 65
Answer(s): (a) 2; (b) 1; (c) 2; (d) 65