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1) Did you know that the trunk of an average elephant can hold about 1
and a half gallons of water??
About how many milk cartons of water can the average elephant hold
in its trunk?
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2) About how much water can the trunks of 2 average elephants hold?
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3) About how much water can the trunks of 3 average elephants hold?
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4) How many average elephants would be needed to hold about 3 gallons
of water?
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5) How many elephants to hold about 6 gallons of water?
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6) Baseball Speeds
A baseball line drive travels about 100 yards in 4 seconds.
About how many yards does a line drive travel in 2 seconds?
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7) About how many yards does a line drive travel in 1 second?
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8) About how many feet does a line drive travel in 4 seconds?
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9) About how many inches does a line drive travel in 4 seconds?
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10) Age: People vs. Mice
Many mice live to be 4 years old. Many people live to be 80 years
old.
Are there many mice as old as you? (yes or no?)
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11) Are there many people as old as you?
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12) How many birthdays do most mice have?
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13) About how many years long than a mouse do many people live?
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14) How long is half of a 4-year-old mouse's life?
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15) About how long is half of an 80-year-old human's life?
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16) Challenge: About how many times as long as a mouse do many people
live?
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17) KOALA BIRTHWEIGHTS
A newborn koala weighs about 1/10 of an ounce when it is born. This
is about as heavy as one penny.
Hold 2 pennies in one hand. How many newborn koalas would you have
to put in the other hand to have about the same weight in each hand?
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18) If you added another newborn koala to one hand, do you think that
you could feel the difference? (answer= probably or probably not)
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19) About how many newborn koalas would weigh about 1 ounce?
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20) About how many pennies would weigh about 1 ounce?
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21) About how many newborn koalas would weigh about 2 ounces?
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22) About how many newborn koalas would weigh about 1 pound? First you
need to find out how many ounces are in a
pound...http://wiki.answers.com/Q/How_many_ounces_are_in_a_cup_and_in
_a_pound
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23) HUMAN LANGUAGES
About 443 million people in the world speak English. About 341
million people speak Spanish. And about 864 million people speak
Mandarin Chinese.
Of these three languages, which language do the most people speak?
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24) Which language has fewer speakers than the other two?
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25) If we wanted to write the number of people who speak English in the
world, (443 million), how many zeros would we put after the 443?
answer with # zeros.
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26) How would we write the number of Mandarin speakers?
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27) About how many more people speak Mandarin than English?
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28) About how many fewer people speak Spanish than English?
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29) About how many more people speak Mandarin than Spanish?
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30) A DOG'S AGE
One rule of thumb for finding a dog's equivalent human age says to
count 7 human years for each year of the dog's life.
If a dog is about 1 year old, what is its "human age" using this
rule?
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31) If a dog is about 2 years old, what is its "human age?"
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32) If a dog's equivalent human age is 21 years, about how many years
has it been alive?
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33) If it's equivalent human age is 49 years, about how many years has
the dog been alive?
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34) Which do you think usually lives longer -- dogs or humans?
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35) DINOSAUR SIZES
The triceratops, a dinosaur with 3 horns, was about 8 to 10 feet
tall and about 20 to 25 feet long.
How many horns do two triceratops have?
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36) If a triceratops was about 8 feet tall about about 20 feet long, how
much longer was it than it was tall?
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37) BARGAIN SHOPPING
(Bargain means, "a good deal")
Which is the bargain?
Pretzels: $0.10 each OR 3 for a quarter?
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38) Which is the bargain?
Gum: a nickel a piece OR 5 for a quarter?
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39) Which is the bargain?
Candy sticks: $0.15 each OR 6 for $1.00?
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40) Which is the bargain?
Pizza: $1.50 per slice OR a 6-slice pizza for $8.50?
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41) HUMMINGBIRD WING FLAPS
A small hummingbird can beat its wings about 70 times a second.
How many times can you flap your arms in 1 second? (try it...
down/up counts as one flap!)
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42) About how many times can a hummingbird beat its wings in 2 seconds?
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43) ...in 3 seconds?
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44) About how many times can a hummingbird beat its wings in half a
second?
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45) About how many times can a hummingbird beat its wings in 1 minute?
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46) About how many times can a hummingbird beat its wings in 2 minutes?
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47) HERDING SHEEP
A sheep farmer needs 1 sheepdog for every 100 sheep.
How many sheepdogs does the farmer need to watch 200 sheep?
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48) How many sheepdogs does the farmer need to watch 300 sheep?
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49) How many sheepdogs does the farmer need to watch a flock of 500
sheep?
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50) ...a flock of 1000 sheep?
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