Adam and Bryan have 160 stickers.
Adam has 20 less stickers than Bryan.
Find the number of stickers that Bryan 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) Adam
(2) Bryan
- Number of stickers 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
(1) The total is given.
(c)
Who gets the shorter bar?
(1) Adam
(2) Bryan
Adam has 20 less stickers than Bryan.
So, Adam (1) gets the shorter bar.
(d)
If 20 more stickers are given to Adam, Adam and Bryan will have the same number of stickers.
Number of stickers that Bryan has
= (160 + 20) ÷ 2
= 180 ÷ 2
= 90
Answer(s): (a) 2; (b) 1; (c) 1; (d) 90