Q1
Jeremy placed five pounds of leaves in two
separate bags. In bag 1 there were five
pounds of leaves and in bag 2 there were five
pounds of leaves and ten worms were
added. Over the next month, Jeremy
weighed the bags weekly. The below chart is
a record of Jeremy’s data for the month.
Weight
of Leaves
Week
1
2
3
4
Bag 1
5 lbs
4.8
4.7
4.6
Bag 2
5lbs
4.7
4.4
4.0
Which of the following is the BEST explanation for the results in
the data chart?
a) Some leaves in bag 1 decayed
b) Some leaves in bag 2 disappeared
c) The worms ate some of the leaves in bag 2
d) The amount of leaves in bag 1 increased
Team Name: ___________________________________
Time Completed: 1st min. 2nd min. 3rd min. 4th min. 5th min.
4th Grade 2012
Q10
Bridges serve an important purpose. They allow
people to pass over canyons, bodies of water,
roads, and other obstacles that are difficult to
cross. Bridges have many designs. Use the
materials provided in the bag to design a bridge
that spans a distance of 24 inches. Completing
this portion of the task will give you an
automatic 10 points. If your bridge holds the
small can of cola you will receive 5 additional
points (15 points total). If your bridge holds the
large can of cola, you will receive an additional
10 points (20 points total). If it holds both cans
of cola, you will receive a combined total of 15
additional points for a total of 25 points.
Team Name: _________________________________________
Length of Bridge 24”= 10 points_ Holds small can_ 15_ Holds large can 20_
Holds both cans 25
4th Grade 2012
Q5
Erosion rates in the Badlands are among the
highest known. The chart below displays the
rate of erosion for different types of stones.
Sandstone
200 years 0.4 inches
400 years 0.8 inches
600 years 1.2 inches
800 years 1.6 inches
1000 years 2 inches
1200 years 2.4 inches
Mudstone
200 inches
400 inches
600 inches
800 inches
1000 inches
1200 inches
Why is there such a vast difference in the
erosion rates of Sandstone and Mudstone in the
badlands?
Answer: Mudstone is softer than sandstone and more prone to weathering than
the sandstone.
Team Name: _________________________________________
Time Completed: 1st min. 2nd min. 3rd min. 4th min. 5th min.
The resistant sandstone in Badlands National
Park erodes at an average rate of one inch in
500 years. How much sandstone erosion will
occur in 4,000 years?
4th Grade 2012
TB2
LPG Environmental is relocating a wetland.
They need to know approxmiately how much
room to plan for the lake below. Estimate the
area of the lake.
= 2 square foot
Team Name: _________________________________________
Final Answer: 130 through 145 sq. ft.
Time Completed: 1st min. 2nd min. 3rd min. 4th min. 5th min.
4th Grade 2012
Q3
Find the secret number.
I am a number with the same digit in
each place value.
The sum of my digits is forty-two.
I am a number less than 6 million.
What number am I?
Team Name: _________________________________________
Final Answer: 777,777 or 77,777.7 or 7,777.77 or 777.777 or
77.7777 or 7.77777 or 0.777777
Time Completed: 1st min. 2nd min. 3rd min. 4th min. 5th min.
4th Grade 2012
TB1
The building design below is being used by All
County Architect. It is made up of seven
overlapping squares. Each of the seven large
squares has dimensions of 8ft X 8ft. Each
over lapping section (small, gray, square) is
one-fourth the size of a larger square.
8 feet
What is the area of the entire figure?
Team Name: _________________________________________
Final Answer: ________352 square feet ___________
Time Completed: 1st min. 2nd min. 3rd min. 4th min. 5th min.
4th Grade 2012
Q6
Look at the position of the arrows in the
square. You decide to rotate the figure
90 counter-clockwise and then reflect the
figure over line segment BC. Draw the
three arrows in the blank square to show
the position they would be in after the
two transformations.
Team Name: _________________________________________
Time Completed: 1st min. 2nd min. 3rd min. 4th min. 5th min.
4th Grade 2012
Q7
Place the numbers below in the appropriate
place on the number line.
0.01
0.35
49
98
75%
4
5
1
1
8
Team Name: _________________________________________
Time Completed: 1st min. 2nd min. 3rd min. 4th min. 5th min.
4th Grade 2012
Q8
Draw the top view of the figure below on the
grid provided on the back of this paper.
4th Grade 2012
Q8
Team Name: _________________________________________
Time Completed: 1st min. 2nd min. 3rd min. 4th min. 5th min.
4th Grade 2012
Q9
Fill in the diagram below to illustrate the
relative positions of the Sun, the Moon, and
Earth during a full moon.
*Include the Sun and the Moon.
As long as the drawing shows a straight line from the sun, earth, and moon
Team Name: _________________________________________
Time Completed: 1st min. 2nd min. 3rd min. 4th min. 5th min.
4th Grade 2012
Q4
Kasey Kahne designed a new logo for the racing
trailer that carries his race car. It is shown below.
Using the ruler and scale provided, determine the
area that will be painted, as shown above.
Scale: 1 inch = 1 foot
Team Name: _________________________________________
Final Answer: ____________15 sq. ft. _____________________
Time Completed: 1st min. 2nd min. 3rd min. 4th min. 5th min.
4th Grade 2012
PQ
Use the information given to figure out who will
win the third round of tug-o-war.
Round 1: On one side are four acrobats, each of
equal strength. On the other side are five
neighborhood grandmas, each of equal
strength. The result is dead even.
Round 2: On one side is Ivan, a dog. Ivan is
pitted against two of the grandmas and one
acrobat. Again, it’s a draw.
Round 3: Ivan and three of the grandmas are on
one side, and the four acrobats are on the
other.
WHO WILL WIN THE THIRD ROUND?
Team Name: _________________________________________
Final Answer: _____Ivan & the grandmas__________________
Time Completed: 1st min. 2nd min. 3rd min. 4th min. 5th min.
4th Grade 2012
Q2
Three men crash-land their airplane on a deserted island in the South
Pacific. On their first day they gather as many coconuts as they can find
into one big pile. They decide that, since it is getting dark, they will wait
until the next day to divide the coconuts.
That night each man took a turn watching for rescue searchers while
the others slept. The first watcher got bored so he decided to divide
the coconuts into three equal piles. When he did this, he found he had
one remaining coconut. He gave this coconut to a monkey, took one of
the piles, and hid it for himself. Then he jumbled up the two other piles
into one big pile again.
To cut a long story short, each of the three men ended up doing exactly
the same thing. They each divided the coconuts into three equal piles
and had one extra coconut left over, which they gave to the monkey.
They each took one of the three piles and hid those coconuts. They
each came back and jumbled up the remaining two piles into one big
pile.
What is the smallest number of coconuts there could have been in the
original pile?
Team Name: _________________________________________
Final Answer: ______25__________________________________
Time Completed: 1st min. 2nd min. 3rd min. 4th min. 5th min.
4th Grade 2012