Bryan has 50 marbles at first.
Adam gives him another 40 marbles.
How many marbles does Bryan have in the end?
- 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) At first
(2) Adam gives him
- Number of marbles that Bryan has in the end = _____
(a)
Which model should we draw?
(1) Model Part-whole
(2) Model Comparison
We should draw a (1) Model Part-whole.
(b)
Is the total given?
(1) Yes
(2) No
(1) The total is given.
(c)
Who gets the shorter bar?
(1) At first
(2) Adam gives him
40 marbles is less than 50 marbles. So, (2) 'Adam gives him' gets the shorter bar.
(d)
Number of marbles that Bryan has in the end
= 50 + 40
= 90
Answer(s): (a) 1; (b) 1; (c) 2; (d) 90