51 P2.ST.JC.18120707
Level 2
Adam has 40 stickers.
He lacks 10 stickers.
How many stickers does he need altogether?

  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) At first
    (2) Adam gives away
  4. Number of stickers that Adam has in the end =
4 m
W Addition & subtraction Model Part-whole
52 P6.ST.JC.18121309
Level 2
Find the value of 1 unit.
  1. 7 u - 20 = 4 u + 10
  2. 4 u + 10 = 7 u - 20
  3. 4 u - 10 = 1 u + 20
  4. 1 u + 20 = 4 u - 10
4 m
W 4 operations Units equations
53 P4.ST.JC.18120911
Level 1
Adam pays $10 in total for a sticker and a marble.
The sticker costs $6 more than the marble.
What is the cost of the sticker?
2 m
W Addition & subtraction Model Comparison Units method
54 P3.ST.JC.18120807
Level 1
Adam and Bryan have 400 stickers.
Adam has 300 stickers.
  1. Who has less stickers?
    (1) Adam
    (2) Bryan
  2. How many less stickers does this person have?
3 m
W Addition & subtraction More than or less than Model Comparison
55 P1.ST.JC.18120610
Level 1
Adam and Bryan have 10 stickers.
Adam has 6 stickers.

  1. Who has less stickers?
    (1) Adam
    (2) Bryan
  2. How many less stickers?
2 m
W Addition & subtraction More than or less than Model Comparison

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