Question
Adam needs 90 marbles.
He has 40 marbles.
How many more does he need?

  1. Which model should we draw?
    (1) Model Part-whole
    (2) Model Comparison
  2. Is the total given?
    (1) Yes
    (2) No
  3. Who gets the shorter bar?
    (1) Has
    (2) Needs
  4. Number of more marbles that Adam needs = _____
4 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

(c)

Click button first when a symbol is required. X

(d)

Click button first when a symbol is required. X

Adam needs 90 marbles.
He has 40 marbles.
How many more does he need?

  1. Which model should we draw?
    (1) Model Part-whole
    (2) Model Comparison
  2. Is the total given?
    (1) Yes
    (2) No
  3. Who gets the shorter bar?
    (1) Has
    (2) Needs
  4. Number of more marbles that Adam needs = _____