441 P6.ST.JC.18121452
Level 2
Fill in the blanks.
Adam has thrice as many stickers as Chris.
Adam gives 10 to Chris.
In the end, Adam has twice as many stickers as Chris.

  1. Difference in the number of stickers between Adam and Chris at first = _____ u
  2. Difference in the number of stickers between Adam and Chris in the end = _____ u
  3. Difference in the number of stickers Adam has at first and in the end = _____ u
  4. Difference in the number of stickers Chris has at first and in the end = _____ u
4 m
Times as many Unchanged total Units table
442 P5.ST.JC.18121200
Level 2
The average cost of 4 books is $30.
The average cost of 3 books is $10.
What is the cost of 4th book?
2 m
2 averages Average with unknown quantity
443 P4.ST.JC.18120965
Level 3
A marble, a sticker and a bead costs $12.10 altogether.
The marble costs $1.40 less than the sticker.
The bead costs $2.10 more than the sticker.
How much do 3 beads cost?
3 m
D Addition & subtraction Model Comparison
444 P3.ST.JC.18120888
Level 3
Adam has some money to buy 8 stickers but he buys only 5 stickers and has $36 left.
  1. How much does each sticker cost?
  2. How much money does he have?
4 m
W 4 operations Units method
445 P6.ST.JC.18121447
Level 2
Fill in the blanks.
The ratio of Adam's stickers to Bryan's stickers is 2 : 3.
Adam gives 10 stickers away.
The ratio of Adam's stickers to Bryan's stickers becomes 1 : 2.

  1. Whose number of stickers has not changed? Give the answer in number. (Eg Adam = 1; Bryan = 2)
  2. Number of stickers that Bryan has = _____ u
  3. Change in the number of stickers that Adam has = _____ u
  4. 1 u = _____
4 m
Ratio to units Unchanged quantity Units table
446 P5.ST.JC.18121196
Level 3
The average number of stickers that Adam and Bryan have is 30.
The average number of stickers that Adam and Chris have is 40.
The number of stickers that Bryan has is 23 as many as Chris.
  1. How many stickers does Adam have?
  2. How many stickers does Bryan have?
  3. How many stickers does Chris have?
3 m
Fraction to units Average with repeated identity Units & parts & boxes
447 P4.ST.JC.18120966
Level 2
After buying 3 stickers at $7.50 each,
Adam has $12.60 left.
How much money does Adam have at first?
3 m
D 4 operations Model Part-whole
448 P3.ST.JC.18120887
Level 2
Adam has enough money to buy 3 marbles at $12 each.
If he does not buy the marbles, he can buy 4 stickers with the same amount of money.
  1. How much does each sticker cost?
  2. How much more is a sticker than a marble?
4 m
W 4 operations More than or less than Equal stage Units method
449 P6.ST.JC.18121451
Level 2
Fill in the blanks.
2 boys, Adam and Bryan, have some stickers.
The ratio of Adam's to Bryan's stickers is 2 : 1.
Adam gives 20 to Bryan.
The ratio of Adam's to Bryan's stickers becomes 2 : 3.

  1. Number of stickers that Bryan has at first = _____ u
  2. Change in the number of stickers that Bryan has = _____ u
  3. Number of stickers that Adam has at first = _____ u
  4. Number of stickers that Adam has in the end = _____ u
4 m
Ratio to units Unchanged total Units table
450 P5.ST.JC.18121197
Level 3
The average number of stickers that Adam and Bryan have is 30.
The average number of stickers that Bryan and Chris have is 50.
The average number of stickers that Chris and Adam have is 40.
  1. How many stickers does Adam have?
  2. How many stickers does Bryan have?
  3. How many stickers does Chris have?
3 m
Average with repeated identity Units & parts & boxes
451 P3.ST.JC.18120919
Level 3
Stickers are sold in packets of 10.
Each packet costs $5.
Adam has $33.
  1. What is the greatest number of stickers that Adam can buy?
  2. How much will Adam spend?
4 m
Remainder Min-max
452 P4.ST.JC.18120967
Level 1
Adam buys 4 identical stickers.
He pays the cashier $50 and
receives $4.20 change.
How much does each sticker cost?
3 m
D 4 operations Model Part-whole
453 P6.ST.JC.18121448
Level 3
Fill in the blanks in whole numbers or decimals.
2 boys, Adam and Bryan, share some stickers.
Bryan has 20% of the total.
If Bryan receives extra stickers,
his number of stickers increases by 50%.

  1. Number of stickers that Bryan has at first = _____ u
  2. Change in the number of stickers that Bryan has = _____ u
  3. Number of stickers that Bryan has in the end = _____ u
  4. Number of stickers that Adam has in the end = _____ u
4 m
Percent of a whole Percent change by Percent to units Unchanged quantity Units table Decimal units
454 P5.ST.JC.18121201
Level 2
The average cost of three books is $30.
Two of the books cost $10 and $20.
What is the cost of the 3rd book?
2 m
Averaging out Average with unknown quantity Units equations
455 P3.ST.JC.18120920
Level 3
Stickers are sold in packets of 10.
Each packet costs $5.
Liming needs 56 stickers.
  1. What is the minimum number of packets that Adam can buy?
  2. How much will Adam spend?
4 m
Remainder Min-max
456 P4.ST.JC.18120968
Level 1
Adam buys 3 marbles and 2 pens for $10
Each marble costs $2.20.
How much is each pen?
3 m
D 4 operations Model Part-whole Units method
457 P6.ST.NK.18121469
Level 3
Fill in the blanks in whole numbers or decimals.
2 boys, Adam and Bryan, share some stickers.
Bryan has 20% of the total.
If Bryan gives away some stickers,
his number of stickers decreases by 25%.

  1. Number of stickers that Bryan has at first = _____ u
  2. Change in the number of stickers that Bryan has = _____ u
  3. Number of stickers that Bryan has in the end = _____ u
  4. Number of stickers that Adam has in the end = _____ u
4 m
Percent of a whole Percent change by Percent to units Unchanged quantity Units table Decimal units
458 P5.ST.JC.18121202
Level 3
The average cost of some books is $75.
When another 3 books are added,
the total cost increases by $190.
The average cost becomes $70.
How many books are there in the end?
3 m
2 averages Averaging out Average with unknown quantity Number x value Units equations Units table
459 P3.ST.JC.18120921
Level 3
For every 50 cupcakes that Adam bakes,
he bakes 30 muffins.
He bakes 100 cupcakes.
  1. How many muffins does he bake?
  2. How many cupcakes does he bake?
4 m
W 4 operations Proportion
460 P4.ST.JC.18120969
Level 2
The mass of a box with 8 marbles is 12.35 kg.
Each marble weighs 1.2 kg.
  1. What is the mass of the empty box?
  2. What is the mass of 3 empty boxes?
3 m
D 4 operations Model Part-whole Units method

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