Answer of 4 (correct answer)
//redHerring1 is 8,000 or 8000case “SRL02g”:
var vidAddress1 = “”;
feedback2 += ” Your answer: _8,000 or 8000_ is not correct because the entire length of the race is 4,800
meters so
the tables cannot be spaced 8,000 meters.
This video
uses a number line to
model the correct situation.
Answer of 400 (correct answer)
Good thinking!! You correctly found that Rob will space the tables 800 meters.
If you are
interested, check out 2 other ways to solve this question:
This video uses a
model to show why each operation is necessary.
This video uses a number line to model the
situation.
Answer of 8
//distractor B1 is 8Your answer: 8, is not correct. You may have divided incorrectly. Watch this video for an explanation why the distance between
tables should be 800 meters, not 8
meters.
Answer of 200
//distractor B2 is 200Your answer: 200, would be correct for last year’s race, but is not correct for
this year’s race. Watch this video for an explanation
why 200 meters is not correct and how to adapt the strategy to find the correct answer.
Answer of 2400
//distractor A3 is 2400Your answer was: 2400, but the actual answer was 800 meters. Watch this video for an explanation why 2,400 meters is not
correct and how to adapt the strategy
to
find the correct answer.
Answer of 4800
//distractor A4 is 4800Your answer was: 4800, but the actual answer was 800 meters. Watch this video for an explanation why 4,800 meters is not
correct and how to adapt the strategy
to
find the correct answer.
Other Answers including No Answer
Your answer: _______________ was not correct. The actual answer was 800 meters between tables. See
how
2 other people solved this question:
This video uses
a model to show why
each
operation is necessary.
This video uses a
number line to model the
situation.
Set #2, Item #3: Rob bought 27 packs of cups with 12 cups in each pack. There are 6 tables and Rob will put the same number of cups on each table. How many cups will be on each table?
Answer of 48
Your answer: ” + AnswerForA + ” is not correct because the number 48 describes minutes. So, 150 is in
minutes, not hours.
If you want to see how 2 other people solved this question, see this video.
Answer of 54 (Correct Answer)
//Key is 54Good thinking!! You correctly found that there will be 54 cups on each table. (Even though there
would be
three minutes left after the fourth listen).
If you are interested, check out 2 other ways to solve this
question:
This video uses multiplication and division
to calculate the
number
of cups on each table.
This video uses a model of the
situation.
Answer of 324
//distractor C1 is 324Your answer: 324, is the total number of cups, but not the number of cups on each
table.
This video uses multiplication and division to calculate the
number of cups on
each
table.
Answer of 32
//distractor C2 is 32Not quite. There are over 300 cups so 32 is too few. This
video shows how to correctly model the situation.
Answer of 48
//distractor C3 is 48Close but there are over 320 cups so 48 is too few. This
video shows how to correctly model the situation.
Answer of 52 or 53
//distractor C4 is 52 or 53You are close, but you probably made a calculation error along the way. This video breaks down each calculation to help diagnose
the error.
Other Answers, Including No Answer
Your answer: __________ was not correct. The actual answer is 54 cups on each table. Check
out 2
other strategies to solve this question:
This video
uses multiplication and
division to calculate the number of cups on each table.
This video uses a model of the situation.
Set 3, Item #1
Question: How many total cookies did the students bake? Explain your answer using numbers, words, and/or pictures.
Unclear Answer
Your answer: __________
Your answer is not very clear because it sounds like multiple
answers.
If you want to see how to use a table to solve this question, see this video.
Answer of 528 (Correct Answer)
//key is 528Your answer: 528
Good thinking!! You correctly found there are a total of 528
videos.
If you are interested, check out 2 other other ways to solve this question:
This video uses multiplication and then addition.
This video digs more into .
Answer of 428
//distractor A1 is 428Not quite! You answered: 428
36 cookies in 8 boxes is 288 cookies and 20 cookies in 12 bags is 240
cookies. When we add 288 and 240, 8 tens plus 4 tens is 12 tens which means we carry an extra hundred.
This video shows why 428 is incorrect and how to get the
correct answer.
Other Answers, Including No Answer
Your answer: _________________
But the actual answer was 528 cookies. Watch this video for a detailed solution explanation. It uses
multiplication and
addition to find
the total.
This video explores why multiplication is useful in
these
questions that ask for the total of groups of objects.
Set 3, Item #2
Question: How many more cookies are in 5 boxes than are in 5 bags?
Correct Answer of 80
//80Your answer: 80 cookies
Good thinking!! You correctly found that there are 80 cookies more, check
out 2 other ways to solve this question:
This video
uses
the operations to solve the problem directly.
This video uses reasoning to make the problem easier
to solve.
Answer of 180
//distractor A1 is 180Not quite! Your answer: 180 cookies
You may have only found the number of
cookies in 5 boxes of 36 cookies, but the question was asking you to compare this value with the cookies in 5 bags.
The
units must be the same. Watch this video for an explanation
of how
to find the correct number of cookies.
This video uses the operations to solve the
problem
directly.
Answer of 100
//distractor A2 is 100Not quite! Your answer: 100 cookies
You may have only found the number of
cookies
in 5 bags of 20 cookies, but the question was asking you to compare this value with the cookies in 5 boxes. Watch this video for an explanation of how to find the correct
volume of
sand.
This video uses the operations to solve the problem
directly.
Answer of 280
//distractor A3 is 280Not quite! Your answer: 280 cookies
You may have found the total number of
cookies
in 5 boxes and 5 bags, but the question was asking you to compare these values to find how many more. Watch
this video for an explanation of how to find the correct
volume of sand.
This video uses the operations to solve the problem
directly.
Answer of 90
//distractor A4 is 90Not quite! Your answer: 90 cookies
You may have subtracted incorrectly. Watch
this video for an explanation of how to find the correct
volume of
sand.
This video uses the operations to solve the problem
directly.
Other Answers Including No Asnwer
Your answer: ____________ cookies
There will actually be 80 extra
cookies.
If
you are interested, check out 2 other ways to solve this question:
This
video uses the volume equation of rectangular prisms to solve the problem directly.
This video uses
reasoning to solve this situation.
Set #3, Question #3
Question: After the bake sale, 1 box and 1 bag of cookies remained. The organizers gave the remaining cookies to the 6 students on the teams. Each student received the same number of cookies. a) What is the largest number of cookies each student could have received? b) How many extra cookies would be left after each student received that number of cookies?
9 cookies with 2 extra cookies (Correct Answer)
//9 cookies for each student with 2 extra cookes (56 div 6 = 9 r 2)Your answer: 9 cookies for each student, and 2 extra
cookies
Good thinking!! You correctly found that there will be 9 cookies for each student with 2 extra
cookies.
If you are interested, check out 2 other ways to solve this question:
This video uses division and interpreting the
remainder.
“;
feedback2 += “
This video using the idea of equally distributing
the
cookies.
”
feedback2 += “
8 cookies for each student
//Each student receives 8, not 9Your answer: 8 cookies for each student, and _________ extra
cookies
Close!! You calculated an incorrect number of cookies per person. Each student will get 9, not 8,
cookies
as shown in this video.
This video using the idea of equally distributing
the
cookies.
10 cookies for each student
Your answer: 10 cookies for each student, and __________ extra
cookies
Close!! You calculated an incorrect number of cookies per person. Each student will get 9, not
10,
cookies as shown in this video.
This video using the idea of equally distributing
the
cookies.
56 cookies for each student
//Each student receives 56, not 9Your answer: 56 cookies for each student, and _________ extra
cookies
It looks like you found the total number of cookies, 56, but did not share the
cookies.
Each student will get 9 of these 56 cookies as shown in this
video.
” ;
This video using the idea of equally
distributing
the cookies.
54 cookies for each student
//Each student receives 54, not 9Your answer: 54 cookies for each student, and ________ extra
cookies
Close!! You calculated 54 cookies per person, but we need to divide these cookies as
shown in this video.
This video using the idea of equally
distributing the cookies.
Correctly shared 9 cookies with each, but had an incorrect remainder
//Student got 9, but not 2 extraYour answer: 9 cookies for each student, and ______________ extra cookies
Very close! You found that
the each student receives 9 cookies, but you did not interpret the remainder of 56 divided by 6 equals 9 remainder 2
correctly.
If you are interested, check out this video digging into this question:
This video uses the volume equation of rectangular prisms
to solve the problem directly.
This video using the idea of equally
distributing the cookies.
Correctly identified 2 extra cookies but did not share correctly
} else if (AnswerForB == 1) { //Student got 2 extra, but not 9 per studentYour answer: ________ cookies for each student, and 2 extra
cookies
Very close! You found that there are 2 extra cookies but did not determine that each
student receives 9 cookies. There will actually be 80 extra cookies.
If you are
interested, check out 2 other ways to solve this question:
This
video uses the volume equation of rectangular prisms to solve the problem
directly.
This video using the idea of equally
distributing the cookies.
Other Answers
} else if (AnswerForA == null) {Your answer: ____________ cookies for each student, and _______________ extra
cookies
Very close! You found that there are 2 extra cookies but did not determine that each
student receives 9 cookies. There will actually be 80 extra cookies.
If you are
interested, check out 2 other ways to solve this question:
This
video uses the volume equation of rectangular prisms to solve the problem
directly.
This video using the idea of equally
distributing the cookies.