Bryan and Adam have 80 beads.
Bryan has 30 less beads than Adam.
Find the number of beads 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 beads 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 30 less beads than Adam.
So, Bryan (1) gets the shorter bar.
(d)
If 30 more beads are given to Bryan, Bryan and Adam will have the same number of beads.
Number of beads that Adam has
= (80 + 30) ÷ 2
= 110 ÷ 2
= 55
Answer(s): (a) 2; (b) 1; (c) 1; (d) 55