BELL RINGERS
8-31 Alonzo’s grandmother was born on March 6, 1912.
Her birthday is written 3-6-12. Find all possible “doubledouble” birthdays in this century. Can anyone have such
a birthday? Why or why not?
9-1 Aaron has an equal number of pennies, nickels and
dimes. Their total value is $7.68. How many dimes does
he have?
9-2 A coin is tossed 4 times in a row. List all the possible
outcomes. Use H for heads and T for tails.
One possibility is HHHH.
9-6 How many squares are in this 4x4 grid?
9-7 How many squares are in a 7x7 grid?
9-8 A snail crawls up a slippery slope at 5 feet per day
but then slides back down 4 feet each night. The slope is
20 feet long. When will the snail reach the top?
9-9 A cheese cylinder is to be cut into eight equal pieces
with three slices. (cuts) Show how this can be done. No
pieces are moved.
9/12 How many squares in a 5x5 grid?
9/13 Use the digits from 1-9, one time only, so that
every row, column, and diagonal adds up to 15.
(3x3 grid)
9/14 Two corners of a square are at (8,16) and (16, 8)
on a grid.(8,0),(0,8)and (8,8),(16,16)
Name some other possible corners. (At least three)
9/15 In a game Alice scored six points every time she hit
a target but lost nine points every time she missed. After
30 rounds her score was 0.
How many hits and misses did she have?18 hits, 12
misses
9/19 Draw 5 squares on graph paper. (Use a straight
edge) Divide each square into four equal parts in a
different way.
9/20 Every third visitor to a new florist receives a rose.
Every tenth visitor receives a plant. Every twenty-fifth
visitor receives a bouquet. Which visitor is the first one
to receive all three gifts?150
9/21 Lee’s father said, “I am a billion seconds old.”
About how many years old is Lee’s father?32 years
9/22 I am a 3-digit number. My digits are in ascending
order. The sum of my digits is 18. The product of my
digits is 192. Who am I?468
9/26 In how many ways can you make change for
50 cents if no pennies are allowed? (Nickels, dimes, and
quarters)
9/27 Derek used and elevator while making deliveries.
First he went up 8 floors. Then he went down 5 floors.
Finally he went up 3 floors to the tenth floor. At what
floor did he get on the elevator?
9/28 Jasper and Julia are siblings. Jasper has two more
sisters than he has brothers. Julia has the same number
of brothers as she has sisters. How many sons and
daughters are in the family?
9/29 The odometer on a car registers to the nearest
tenth of a mile. By the time a car travels 99,999.9 miles,
how many times will five or more consecutive zeros have
occurred?
10/3 I am a number that is increased by 60,000 if you
place one 6 to the right of me.
WHO AM I?
10/4 Describe how you could estimate the number of
times your heart will beat in a year. Then estimate how
many times your heart has beaten since you were born.
10/5 Find the next 3 numbers in each pattern
A. 12,24,72,288,____, ____, ____
B. 5,12,26,54, ____, ____, ____
C. 1,16,81,256, ____, ____,____
10/6 Tetrominoes are formed by four congruent
squares. Each square must share at least one side with
another square. Draw all possible tetrominoes. One is
shown.
10/11 Every day Maria increases the number of sit-ups
she does by one. In six days she has done a total of 315
sit-ups. How many did she do the first day?
10/12 Todd was upset when he found out that Friday
the thirteenth was going to occur two months in a row.
What are the only two months when this could happen?
10/13 A ball is dropped from a height of 32 feet. On
each bounce it rises half the previous height. It is caught
when it bounces exactly one foot high. How far did it
travel?
10/17 Fill in the digits 1-9 exactly once to make a true
addition problem. 192 + 384 = 576
10/18 Suppose the length and width of a rectangle are
doubled. What effect does this have on the perimeter?
What effect does this have on the area?
10/19 A piñata is filled with prizes. When it is burst
open, there is always one prize left if all the prizes are
split into 3, 5 or 6 equal groups. If divided into 7 equal
groups, no prizes are left. What is the least number of
prizes that can be in the piñata?
10/20 A palindrome is a number such as 131 that reads
the same backward and forward. How many 3-digit
palindromes are there?
10/24 Find the greatest area possible for a rectangle
with whole-number dimensions that has a perimeter of
30 feet.
10/25 How many times in a 12-hour period would the
digits on a digital clock have a sum of 10? Example 7:21
10/26 Professor Potter has poodles and parakeets. If
the animals have a total of 9 heads and 30 feet, how
many parakeets does he have?