421 P2.ST.JC.18120761
Level 2
4 triangles + 1 star = 100
1 star = 20
1 triangle = _____
4 m
W 4 operations Units & parts Substitution
422 P6.ST.JC.18121464
Level 3
Fill in the blanks.
Adam spends 15 of his money on 4 stickers and 5 marbles.
Each marble costs twice as much as each sticker.
Let the cost of 1 sticker be 1 u.

  1. Cost of 1 marble = _____ u
  2. Amount that Adam has spent = _____ u
  3. Amount that Adam has left = _____ u
  4. Amount that Adam has at first = _____ u
4 m
Fraction of a whole Times as many Units method
423 P5.ST.JC.18121192
Level 2
The average cost of 5 books is $30.
After another book that costs $90 is added,
  1. What is new total cost of all the books?
  2. What is new average cost of all the books?
3 m
Averaging out
424 P4.ST.JC.18120961
Level 1
Adam buys a marble and a sticker.
The marble costs $45.30.
The sticker costs $32.80 more than the marble.
How much does he spend altogether?
2 m
D Addition & subtraction Model Comparison
425 P3.ST.JC.18120886
Level 3
Adam saves $1 in the 1st week and $4 in the 2nd week.
Each week, he saves $3 more than the week before.
  1. How much money does he save in the 5th week?
  2. In which week does he save $22?
4 m
W 4 operations Money More than or less than Equal intervals
426 P2.ST.JC.18120762
Level 3
A = 20 rectangles
B = A + A
B = _____ rectangles
4 m
W Addition & subtraction Units & parts & boxes Substitution
427 P6.ST.JC.18121430
Level 1
Fill in the blanks.
There are some $10 notes and $2 notes.
The ratio of $10 notes and $2 notes is 4 : 7.

  1. Number of $2 notes = _____ u
  2. Number of $10 notes = _____ u
  3. Total value of $2 notes = _____ u
  4. Total value of $10 notes = _____ u
4 m
Ratio to units Number x value Units table
428 P5.ST.JC.18121193
Level 2
The average cost of 5 books is $30.
After a book that costs $60 is removed,
  1. What is new total cost of all the remaining books?
  2. What is new average cost of all the remaining books?
3 m
2 averages Averaging out
429 P4.ST.JC.18120962
Level 1
Adam runs a distance of 3.6 km.
Bryan runs a distance of 1.45 km less than Adam.
What is the total distance that they run?
2 m
D Addition & subtraction Model Comparison
430 P3.ST.JC.18120890
Level 3
There are some lamp posts along a road at equal distances.
The distance between the 1st and the 4th lamp post is 12 m.
What is the distance between the 1st and the 10th lamp post?
4 m
Intervals
431 P2.ST.JC.18120763
Level 3
A + 1 rectangle = 3 rectangles
A + B = 5 rectangles
B + C = A + 5 rectangles

  1. A = _____ rectangles
  2. B = _____ rectangles
  3. C = _____ rectangles
5 m
W Addition & subtraction Units & parts & boxes Substitution
432 P6.ST.JC.18121431
Level 2
Fill in the blanks.
There are some $10 notes and $2 notes.
The ratio of $2 notes and $5 notes is 4 : 7.

  1. Total number of notes = _____ u
  2. Difference in the number of $10 notes and $2 notes = _____ u
  3. Total value of notes = _____ u
  4. Difference in the value of $10 notes and $2 notes = _____ u
4 m
Ratio to units Number x value Units table
433 P5.ST.JC.18121194
Level 2
The average cost of 5 books is $30.
After 2 books are removed,
the average cost of the remaining books is $20.
  1. What is the total cost of the 2 books that are removed?
  2. What is the average cost of the 2 books that are removed?
3 m
2 averages Averaging out
434 P4.ST.JC.18120963
Level 2
2 marbles and 1 sticker cost $12.10.
1 marble costs $1.70 more than 1 sticker.
How much does 1 marble cost?
3 m
D Addition & subtraction Model Comparison Model Stacking
435 P3.ST.JC.18120891
Level 3
12 lamp posts are planted along a road at equal distances.
The distance between the 1st and the 5th lamp post is 20 m.
What is the distance between the 1st and the last lamp post?
4 m
Intervals
436 P2.ST.JC.18120764
Level 3
A = 4 C
B - 2 C = A + A + 3 C
B = ? C
5 m
W Addition & subtraction Units & parts & boxes Substitution
437 P5.ST.JC.18121195
Level 2
The average cost of 5 books is $50.
After 2 new books are added,
the average cost of all the books is $40.
  1. What is the total cost of the 2 books that are added?
  2. What is the average cost of the 2 books that are added?
3 m
2 averages Averaging out
438 P4.ST.JC.18120964
Level 2
Adam pays $12.30 for 2 marbles and 3 stickers.
A marble costs $1.40 more than 1 sticker.
What is the cost of 3 marbles and 4 stickers?
3 m
D Addition & subtraction Model Comparison Model Stacking
439 P3.ST.JC.18120892
Level 3
Some lamp posts are placed along a street at equal distances.
The distance between the 1st and the 4th lamp post is 18 m.
The distance between the 1st and the last lamp post is 54 m.
How many lamp posts are there altogether?
4 m
Intervals
440 P2.ST.JC.18120765
Level 3
A - 1 = 3
A + B = 5
B + C = A + 5

  1. Find A.
  2. Find B.
  3. Find C.
5 m
W Addition & subtraction Units & parts & boxes Substitution

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