51 P4.ST.JC.18120908
Level 1
There are 2300 marbles in total.
800 are red marbles.
The rest are blue marbles.
How many less red marbles than blue marbles are there?
2 m
W Addition & subtraction Model Comparison
52 P1.ST.JC.18120608
Level 1
Adam has 3 stickers.
Bryan has 2 less stickers than Adam.
How many stickers does Bryan have?

  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) Adam
    (2) Bryan
  4. Number of stickers that B has =
4 m
W Addition & subtraction Model Comparison
53 P3.ST.JC.18120822
Level 2
Fill in the blanks with units or unit equations.
70 children are in a school.
There are 30 less girls than boys.

  1. Number of boys = _____
  2. Number of more boys than girls = _____
  3. Total number of children = _____
  4. 1 u = _____
4 m
W Addition & subtraction Model Comparison Units method
54 P5.PA.JM.17083164
Level 1
What is the missing number in the pattern? 26000, 25450,               , 24350, 23800
1 m
Equal intervals W Addition & subtraction
55 P3.PA.JM.17110354
Level 1
What are the missing numbers?
1222, (a)         , 1242, 1252, (b)         , 1272
1 m
Equal intervals W Addition & subtraction

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