The post The Cat in Charge appeared first on Bedtime Math.

]]>*Wee ones:* Wilberforce was Chief Mouser for 4 PMs, ending with Margaret Thatcher. How many Prime Ministers did Wilberforce serve before her?

*Little kids:* If Chief Mouser catches a mouse, how many feet do they have together? *Bonus:* If Wilberforce served for 18 years. how much longer than your whole life is that?

*Big kids:* If the Chief Mouser is fed 2 meals a day and also catches 1 mouse every day, how many times does the cat eat in 1 week? *Bonus:* If the Chief Mouser catches 3 new mice every day, how many mice does the Chief Mouser catch this month? (Reminder: March has 31 days).

*The sky’s the limit:* We can’t tell you how many mice the Chief Mouser likes to eat each day, but if you multiply that number by itself and add 6, you get 42. How many mystery mice does the Chief Mouser eat?

Answers:

*Wee ones:* 3 more Prime Ministers.

*Little kids:* 8 feet. *Bonus:* Different for everyone…subtract your age in years from 18. If you’re 18 or older, you can find out how much longer you’ve lived!

*Big kids:* 21 meals per week. *Bonus:* 93 mice.

*The sky’s the limit:* 6 mice. If we added 6 to the number as the last step, we had 42 – 6 = 36 before that. The number that we multiply by itself (or “square”) to get 36 is 6, meaning that 6 is the “square root.”

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]]>We all like different music from each other. You and your friend might like some of the same songs, but not every song, and your parents *definitely* don't like all the same songs as you. So what about cows: do cows all like the same music? And is there one kind they like best? Scientists studied this a few years ago by playing different songs for cows to see if the cows made more milk during certain songs. They found that when listening to songs with fewer than 100 beats a minute - maybe about 1 beat per second - the cows gave 3% more milk: in the time the farmers normally got 100 cups from them, they now got an extra 3 cups. Even though people have been studying this since the 1930's, no one's sure whether music really makes cows make more milk - or more importantly, whether the milk tastes better.

The post Good Moo-sic appeared first on Bedtime Math.

]]>*Wee ones:* If this picture shows 6 cows and 9 women playing music for them, were there more people or cows in the barn?

*Little kids:* There were 6 songs the cows liked best, all by different singers. If one was by Aretha Franklin, how many other singers made the list with her? *Bonus:* If your list of favorite songs has 10 more songs than that, how many favorite songs do you have?

*Big kids:* If 60 cows listened to the music and 1/2 of them made more milk, for how many cows did the test work? *Bonus:* If you normally jump 2 feet off the ground, but can jump 17 inches higher than that when you hear your favorite song, how high can you jump now? (Reminder: A foot has 12 inches.)

Answers:

*Wee ones:* More women than cows.

*Little kids:* 5 other cow singers. Bonus: 16 songs.

*Big kids:* 30 cows. Bonus: 41 inches, since you normally jump 24 inches.

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]]>The post Flying Frisbee Stunt appeared first on Bedtime Math.

]]>*Wee ones:* What shape is a Frisbee?

*Little kids:* If during practice the boat guy catches the Frisbee on the 3rd try, then every 3rd try after that, on what try does he make his next catch? *Bonus:* If the Frisbee flies 100 feet and the boat drives 90 feet, which one travels farther?

*Big kids:* If you try this stunt, and you spend 15 seconds riding the boat, then 2 seconds leaping for the Frisbee, then 10 seconds swimming back to the boat, how long does the whole stunt take? *Bonus:* If the Frisbee flew 200 feet and the speedboat missed by falling 1 foot short, how far did the speedboat travel?

*The sky’s the limit:* If Brodie throws the Frisbee at 10 feet per second and the boat travels twice as fast, how far does the boat drive if it catches up in just 5 seconds?

Answers:

*Wee ones:* A circle.

*Little kids:* On the 6th try. *Bonus:* The Frisbee flies farther.

*Big kids:* 27 seconds. *Bonus:* 199 feet.

*The sky’s the limit:* 100 feet, since the boat is traveling 20 feet per second.

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]]>The post Egg-streme Equinox appeared first on Bedtime Math.

]]>*Wee ones:* How many eggs are in a “dozen”? If you have a 1-dozen egg carton, count to find out!

*Little kids:* Raw eggs wobble when they spin, but hardboiled eggs don’t. If you have 4 wobbly eggs and the same number of non-wobbly eggs, how many do you have in total? *Bonus:* If you stack 10 pounds of books and your 10-pound cat on top of an egg, how many pounds is your egg holding?

*Big kids:* If you sleep 10 hours and it’s dark tonight for 12 hours, but you sleep 1 hour past sunrise, how many hours of dark will you be awake? *Bonus:* If you balance an egg at 12:57 pm your time, and it stands for an hour and 15 minutes, when does the egg finally tip over?

Answers:

*Wee ones:* A dozen equals 12 eggs.

*Little kids:* 8 eggs. *Bonus:* 20 pounds.

*Big kids:* 3 hours, since you sleep just 9 hours of dark. *Bonus:* At 2:12 pm.

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]]>The post The Truth about Double-Stuf Oreos appeared first on Bedtime Math.

]]>*Wee ones:* If you eat 2 Oreos and each has 2 chocolate wafers, how many wafers do you eat?

*Little kids:* If you eat 6 Oreos, what numbers do you say to count down as you eat them? *Bonus:* How many wafers do they have?

*Big kids:* If you eat 18 Oreos at once, which would be gross, and twice as many of them are Double-Stufs as regular, how many of each kind of Oreo do you stuff down? *Bonus:* If you eat a regular Oreo first, then a Double-Stuf, then a Mega-Stuf, then a regular again to repeat the pattern, how many Double-Stufs do you eat out of 40 cookies?

*The sky’s the limit:* If you eat 75 cookies (ugh) and you eat the same number of regular Oreos as Double-Stufs, but 3 times as many Mega-Stufs as Double-Stufs, how many of each do you eat?

Answers:

*Wee ones:* 4 wafers.

*Little kids:* 6, 5, 4, 3, 2, 1. *Bonus:* 12 wafers.

*Big kids:* 12 Double-Stufs and 6 regular Oreos. *Bonus:* 13 Double-Stufs. There are 13 full triplets of cookies, and the 40th cookie is a regular Oreo, not a Double-Stuf.

*The sky’s the limit:* You eat 45 Megas, 15 Doubles and 15 regulars. Each “set” of cookies has 1 regular Oreo, 1 Double-Stuff, and 3 mega-stufs, or 5 cookies total, and there are 15 of those sets in 75 cookies.

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]]>The post When Every Door Is a Doggie Door appeared first on Bedtime Math.

]]>*Wee ones:* What shape is that door?

*Little kids:* When Hunter stands on his hind legs, how many of his 4 legs are in the air? *Bonus:* Hunter weighs 100 pounds and Chase weighs 84 pounds. Which dog weighs more?

*Big kids:* If JP teaches Hunter 6 new tricks, and Hunter tries each one 5 times, how many total tries does Hunter take? *Bonus:* If Hunter stood next to you at his full 6 feet 6 inches, how much taller than you would he stand? (Reminder if needed: A foot has 12 inches.)

Answers:

*Wee ones:* It is a rectangle, like most doors.

*Little kids:* 2 legs. *Bonus:* Hunter weighs more.

*Big kids:* 30 tries. *Bonus:* Different for everyone…Hunter is 6 x 12 + 6 = 78 inches tall, so you can subtract your height in inches from 78.

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]]>The post A Day for Wishes and Tricks appeared first on Bedtime Math.

]]>*Wee ones:* Which has more leaves, a 3-leaf clover or a 4-leaf clover?

*Little kids:* If you hand 6 green cookies to your friends, who eat all but 1 cookie, how many green cookies did they eat? *Bonus:* Which have more leaves in total, 2 4-leaf clovers or 3 3-leaf clovers?

*Big kids:* If you have 10 pairs of shoes and a leprechaun randomly hides 5 of your shoes, what’s the greatest number of full pairs you could still have? *Bonus:* If 1 of those leprechauns has a pot with twice as many coins as the 2nd, and together they have 18 coins, how many coins does each pot have?

Answers:

*Wee ones:* The 4-leaf clover!

*Little kids:* 5 cookies. *Bonus:* The 3 3-leafers (9 leaves vs. 8).

*Big kids:* 7 pairs. If the leprechaun took as many matching shoes as possible, he’d take 2 pairs plus 1 shoe from the next. *Bonus:* The 1st pot has 12 coins, and the 2nd has just 6. It’s as if the 1st leprechaun has 2 pots the same size as the other leprechaun, making 3 little pots in total that have 18 coins.

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]]>The post Say “Cheese!” for the Octopus appeared first on Bedtime Math.

]]>*Wee ones:* Who has more arms, an octopus or you?

*Little kids:* How many more arms than you does an octopus have? *Bonus:* If you and the octopus each hold a camera with 2 arms, how many leftover arms are there?

*Big kids:* If the camera filmed the octopus for 7 seconds and then Benjamin for 3 times as long, how long a video did it shoot in total? *Bonus:* If Benjamin gave the octopus a high five exactly halfway through that video, how many seconds had passed?

*The sky’s the limit:* If the octopus’ legs are numbered 1 through 8, and it can use any 2 to hold a camera, how many different ways can it choose a pair of legs to hold it? Assume that the smaller-numbered arm is always on the left (i.e. don’t count each pair twice).

Answers:

*Wee ones:* The octopus.

*Little kids:* 6 arms. *Bonus:* 6 arms, again.

*Big kids:* 28 seconds.* Bonus:* 14 seconds.

*The sky’s the limit:* 28 ways. There are 7 pairs that use leg #1 (1-2, 1-3, 1-4, etc.), then 6 new pairs that use leg 2 that don’t use leg 1 (2-3, 2-4, 2-5, etc.), the 5 pairs that use leg #3…eventually you add 7+6+5+4+3+2+1, for 28 choices in total.

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]]>The post Talking Around the World appeared first on Bedtime Math.

]]>*Wee ones:* Say 5 words in your own language.

*Little kids:* If you can speak 10 languages, then learn 10 more, how many languages do you know? *Bonus:* Does that come to more or fewer than Alexander’s 50 languages?

*Big kids:* If it takes you 7 months to learn a language and you start in mid-October, in what month will you finish? *Bonus:* If only 700 of the 7,000 languages are spoken by more than 100,000 people, how many are spoken by fewer than that?

Answers:

*Wee ones:* Pick 5 words you like, and count them off as you say them!

*Little kids:* 20 languages. *Bonus:* Fewer languages.

*Big kids:* In May of the following year. *Bonus:* 6,300 languages (9/10 of them).

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]]>The post The Wheel Deal appeared first on Bedtime Math.

]]>*Wee ones:* Try to find 3 circles in your room.

*Little kids:* If you slice one pie into 6 slices and another same-size pie into 4 slices, which pie has bigger slices? Bonus: How many slices do the 2 pies have in total?

*Big kids:* If your bike has 2-foot-wide tires and they turn 10 times as you ride, about how many feet did you roll? (You can round pi to 3 if you like, or use 3 1/7, or try 3.14!). Bonus: If your head is 22 inches around, what hat size do you wear?

*The sky’s the limit:* If you ride 440 feet, how many times did the 2-foot-wide wheels turn, if you round pi to 3 1/7?

Answers:

*Wee ones*: Answers might include clocks, edges of plates and cups, and Frisbees.

*Little kids:* The slices from the 4-slice pie are bigger: you cut fewer slices, so each has more pie in it. Bonus: 10 slices.

*Big kids:* The tire is about 6 feet around (or 6 1/7, or 6.28), so you ride about 60 feet (or 60 +20/7, which equals 62 6/7…or 62.8). Bonus: About size 7.

*The sky’s the limit:* 70 times. 2 x 3 1/7 (or 22/7) is 44/7, and if 440 is 44/7 of the wheel turn count, then 440 divided by 44 gives you 1/7 of it. 440/44 is 10. So 10 is 1/7 of the total turn count, giving us 70 turns.

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The post The Wheel Deal appeared first on Bedtime Math.

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