name selection of problems #6 - stern.buffalostate.edu
TRANSCRIPT
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Selection
of
Problems #6
Name
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2
Multiples of 3Less than 10
Rama is a secret number.
Rama is in this arrow picture. Label all of the dots.
Who is Rama? ______
Rama
Clue 1
Clue 2
⁄ ⁄
Åfl
Í°
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3
Pair the tags. One is done for you.
Å· Í⁄‚
Å›
Îfi Τ
Î ⁄‚
Î⁄‚
Åfi
Ï‹ Å⁄‡
fl ¤‚
Τ⁄ ΋
⁄
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4
Positive prime numbers Less than 12
Label the dots. Many solutions are possible.
Multiples of 3 Multiples of 5
Label the dots. Many solutions are possible.
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Label the dots.
5
Å‚.fi
Í⁄.¤
fl.‹
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6
Greater than 30Multiples of 4
Bof is a secret number.
Bof is one of these numbers.
Who is Bof? __________
Bof
Clue 1
Clue 2
±
±
u
p i y
r
±
±
o ±
±
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Label the dots.
7
¤
¤Å fi
‹fi
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Label the dots.
In this picture, exactly three numbers are multiples of 9.
Name them. ________, ________, and ________
8
¤›
Ífl ⁄ Τ
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9
Put each number on the display of a calculator using justthese keys:
¢ ∞ å ß ∂ ƒ ≠
List the keys in the order you use them. You may use a key more than once.
It costs 1¢ each time you press a key. Try to spend less thanthe amount shown for each number.
¤⁄ [⁄‚¢]
[°¢]
[°¢]Ífl
fl‚
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10
Put a single digit in each box to make the calculations correct.
›¤ › ⁄Í
°› ¤
‹°fi‡ Í
‹ ·
· fl ‹ fi‹⁄R=
¤‹⁄ ·
⁄ ‹ °›
‚‚⁄·
Ífi
fi‚¤Í
Í
R=
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11
Ned is a secret number.
Ned is in this arrow picture. Label the dots.
The blue arrowcould be for:
Who is Ned? __________
Ned could be _____, _____, _____, _____, _____, or _____.
Clue 1
Clue 2
Ned›¤
⁄fi
ÅflÍflÏfl
The red arrowcould be for:
ͤ‚Ϥ
⁄ ΋⁄ Îfi
fi ΋° Îfi
¤ ΋‹ Îfi
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12
What is the perimeter of this shape? _________ cm
What is the area of this shape? _________ cm2
_____ cm
_____ cm
_____ cm
_____ cm
_____ cm
_____ cm
Measure each of the sides of this shape.
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13
Orp is a secret number.
Who is Orp? __________
Orp is in this arrow picture.
Clue 1
Clue 2
B¤Í° Å⁄‹
Greater than B2Multiples of 3
Orp
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14
At which point do the red and blue lines intersect?
Name some points on the red line.
Name some points on the blue line.
On which of the two lines does the point (11, 6) lie?
On which of the two lines does the point (N14, B4) lie?
B° B‡ Bfl Bfi B› B‹ B¤ B ⁄B ⁄
B¤
B‹
B›
‚
⁄
¤
‹
›
fi
fl
‡
¤⁄ ‹ › fi fl ‡ °
Bfi
Bfl
B‡
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15
Label the dots and fill in the boxes for the arrows.
Ï›
Ïfi
¤Î
‹Î
ÎÎ
Ï
Ï
‹‚
΋›
΋fi
Τ‹
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16
Simo is a secret number.
Who is Simo? __________
Simo is in this arrow picture. Label the dots.
Simo is one of these red dots. Label the dots.
Clue 1
Clue 2
¤.·fi
Å‚.‹‚Å‚.‚‡
¤.fi‚¤.fifl
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17
Two numbers are connected by a cordif and only if
one of the numbers equals a prime number times the other number.
Label the dots. Many labels are possible for each dot.
Label the dots.
Prime Factor Relation
⁄ °
‹‚ ⁄fi¤ ⁄
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18
Draw all of the possible red arrows in this picture.
B‡
B¤
N¤⁄
Nfl‹
⁄.fi ¤‡
‹.⁄fi
‚
⁄fl
›.fi
‹
‹fl‚
⁄¤‚
·
‹Î
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19
Put a single digit in each box to make the calculations correct.
fl› ‚Î
‡
›
fl
‚‹
Î
fl ‚
‡
› fl ‚ fi⁄fi¤ fi ·‚‚
⁄¤Í
›‚Í
Í
R=
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20
This is a (reduced) map of a cube with 4 cm square faces.
Draw a map of a cube with surface area 54 cm2. What is the volume of this cube? _________
What is the area of each face? _________
What is the surface area of the cube? _________
What is the volume of the cube? _________
4 cm
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21
Fill in the boxes and then label the arrows.
fi Î ‹ ± fi Î ¤ ± fi Î ⁄ ± fi Î ‚ ± fi Î B ⁄ ±
fi Î B‹ ± fi Î B¤ ±
B‹ Î ‹ ± B‹ Î ¤ ± B‹ Î ⁄ ± B‹ Î ‚ ± B‹ Î B ⁄ ±
B‹ Î B‹ ± B‹ Î B¤ ±
Í
Å
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22
Put every positive divisor of 12 and every positive divisor of 20 in this string picture.
Complete.
: greatest common divisor
Positive divisors of 20Positive divisors of 12
⁄ ¤ ¤‚ ± ⁄ ¤ ‹‚ ± ¤fl ¤‚ ±
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23
Lada is a secret number.
Two pairs of parentheses are missing from this expressionfor Lada.
Lada could be ________, ________, ________, or ________.
Who is Lada? ______
Clue 1
Clue 2
Lada
ߢ≠ ...
ß∞≠ ...
···
‹ Î fi Í ¤ Î °
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24
Locate these numbers on this number line.
Put each of these numbers in the string picture.
⁄‚⁄
⁄‚·
⁄‚⁄‹
fi⁄
fi‹
¤⁄
¤‹
›⁄
⁄‚⁄
⁄‚·
⁄‚⁄‹
fi⁄
fi‹
¤‹
‚ ⁄
Greater than Less than 112
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25
Api is a secret number.
Who is Api? ___________
Multiples of 4 Greater than 50
Api
ߣ≠ ...Api
Api can be written usingeach of these symbolsexactly once.
·¤Î fl( Å ‡
¤ )
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26
Find the number of students in each region of the string pictureand record these numbers in the boxes.
There are 30 students in the class.
One-half of the students are boys.
13 of the boys are right-handed.
One-third of the class is left-handed.
Students whoare boys
Students whoare left-handed
Students in the class
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Complete the charts.
Îfl
Ï‹
Λ
Ϥ
Τ›
Λ°‚
Ϥ‚‚
Τ›‚
Ï⁄‚‚
Ï‹‚
27
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28
Label the dots and fill in the boxes for the arrows.
Î
Î
Î
ÎÎ
‹‚
¤‚
⁄fl¤›
· ⁄
Î⁄fi
΋› Îfi
¤
Τfi
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29
Viva is a secret number.
Who is Viva? __________
Viva could be _____, _____, _____, _____, _____, or _____.
Clue 1
Clue 2
Positive divisors of Viva Multiples of 3
: least common multiple
fl‚ ± ⁄¤ Viva
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30
6 is the smallest number in each arrow picture.Find 6 in each picture and then label all of the dots.
‹Î¤
⁄ Τ
⁄ Îfi
⁄ ΋¤Î
fi΋
⁄ Λ⁄ Τ
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31
Put a single digit in each box to make the calculations correct.
⁄ ›Î ¤
°‚fi
‹Î ·
‡ ¤‚°
‹Î
° ‡‚‹
‹·
‹‡°
‹
‚‚¤
Í·
°‚Í
Í
R=
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Alice, Bruce, and Carl play a game with two number cubes.Each cube has 1, 2, 3, 4, 5, and 6 on the faces.
If the game is not fair, explain how to make a fair gamefor the three players.
Is this a fair game? ________If not, explain who is favored.
The game is:
•
•
Toss the two cubes and use the numbers on the top facesto make a fraction less than or equal to 1; for example, .
Alice gets a point for results or less.Bruce gets a point for results between and .Carl gets a point for results or more.
⁄¤
›
32
‹fi
fl
25
13
13
23
23
‚ ⁄
Alice Bruce Carl