16 P4.ST.JC.18120901
Level 1
Adam has 1800 red stickers, 2400 blue stickers and 1200 yellow stickers.
After some stickers are given away,
Adam has 3000 stickers left.
How many stickers are given away?
2 m
W Addition & subtraction Model Part-whole
17 P4.ST.JC.18120912
Level 2
Adam has 500 stickers.
After giving some stickers to his students,
he has 100 stickers left.
Each student receives 10 stickers.
How many students does he give to?
2 m
W 4 operations
18 P4.ST.JC.18120913
Level 2
5 children and 3 adults pay $4000 for their air tickers.
The air ticket for a child costs $200.
How much does 1 adult air ticket cost?
3 m
W 4 operations
19 P4.ST.JC.18120917
Level 2
A marble costs $60.
It costs 3 times as much as a bead.
  1. How much does the bead cost?
  2. How much more does the marble cost than the bead?
  3. How much are 1 marble and 1 bead?
  4. How much are 2 marbles and 3 beads?
4 m
Model Times-as-many Units method
20 P4.ST.JC.18120918
Level 2
Adam pays $3500 for 2 TV sets and 4 mobile phones.
Each TV set costs 3 times as much as each mobile phone.
What is the cost of each TV set?
3 m
Model Stacking Units method

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