Bryan has 100 marbles.
Adam has 10 marbles.
How many more marbles does Bryan have than Adam?
- 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 Bryan has more than Adam = _____
(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
(2) The total is not given.
(c)
Who gets the shorter bar?
(1) Bryan
(2) Adam
Bryan has 100 marbles but Adam has 10 marbles.
10 is less than 100. So, (2) Adam gets the shorter bar.
(d)
Number of marbles that Bryan has more than Adam
= 100 - 10
= 90
Answer(s): (a) 2; (b) 2; (c) 2; (d) 90