Adam has 20 marbles.
Bryan has 10 more marbles than Adam.
How many marbles does Bryan have?
- 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) Adam
(2) Bryan
- Number of marbles that Bryan 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
(2) The total is not given.
(c)
Who gets the shorter bar?
(1) Adam
(2) Bryan
Bryan has 10 more marbles than Adam. So, (1) Adam gets the shorter bar.
(d)
Number of marbles that Bryan has
= 20 + 10
= 30
Answer(s): (a) 2; (b) 2; (c) 1; (d) 30