A Supremely Cheesy World Record

Here's your nightly math! Just 5 quick minutes of number fun for kids and parents at home. Read a cool fun fact, followed by math riddles at different levels so everyone can jump in. Your kids will love you for it.

A Supremely Cheesy World Record

May 7, 2019

You really need only 3 ingredients to make a tasty pizza: dough, sauce, and cheese. In fact, some pizzas are made with just crust and sauce (a tomato pie), or just crust and cheese (a white pizza). So why would someone make a pizza with 156 ingredients? To set a world record, of course! A chef in Australia combined 154 different kinds of cheese on 1 pie. The pizza was a normal size, so he could only sprinkle 1 gram of each cheese on the sauce. That still adds up to about 1/3 pound. Maybe that’s why it was so popular – the restaurant sold all 797 of its 154-cheese pies in just 5 days!

Wee ones: What shape is the pizza in the picture? See if you can find 3 things in the room that are that same shape. Do you think they’re bigger or smaller than that pizza?

Little kids: If 1 of those pizzas is cut into 8 slices, what numbers do you say to count down from 8 as everyone eats them? Bonus: If you get the 154-cheese pizza and a friend gets a normal pizza with 1 different type of cheese, how many types of cheese are on your table?

Big kids: The previous record was 111 cheeses on 1 pizza. How many more cheeses are in the 154-cheese pie? (Hint: What if you were comparing just 54 cheeses to 11 cheeses?) Bonus: If it took 3 hours of planning to invent this pie, but takes only 10 minutes to make one now that there’s a recipe, can the chef make 20 pies in the amount of time it took to plan?

The sky’s the limit: If you eat 1/2 of a pizza, then eat 1/3 of what’s left, then eat 1/4 of what’s left after that, how much pizza did you eat?

Answers:

Wee ones: The pizza is a circle. Circles in your room might include buttons, the edge of a plate or cup, the face of a clock, or a smiley face on paper. Those things are all smaller than that pizza…see if you can find something bigger!

Little kids: 8, 7, 6, 5, 4, 3, 2, 1!  Bonus: 155 cheeses, because 154 + 1 = 155.

Big kids: The 154-cheese pie has 43 more cheeses than the old record. Bonus: Not quite – the chef can make 6 pies per hour, which is the same as making 18 in the 3 hours it took to plan. Another way to solve it: 3 hours x 60 minutes each = 180 minutes to plan, while it would take 20 x 10 = 200 minutes to make the pies.

The sky’s the limit: You eat 3/4 of the pie. After eating the half, you eat 1/3 of the other half, which comes to 1/3 x 1/2 = 1/6. The piece that’s left is now 2/6, or 1/3, of the original. Eating 1/4 of that comes to 1/4 x 1/3 = 1/12. Taking that 1/12 out of the 1/3 is like taking 1/12 out of 4/12, leaving behind 3/12 of the pie, or ¼. If 1/4 is left, you must have eaten 3/4! You can also add up what you ate: 1/2 + 1/6 + 1/12. That’s the same as 6/12 + 2/12 + 1/12 = 9/12, which = 3/4.

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About the Author

Laura Overdeck

Laura Overdeck

Laura Bilodeau Overdeck is founder and president of Bedtime Math Foundation. Her goal is to make math as playful for kids as it was for her when she was a child. Her mom had Laura baking before she could walk, and her dad had her using power tools at a very unsafe age, measuring lengths, widths and angles in the process. Armed with this early love of numbers, Laura went on to get a BA in astrophysics from Princeton University, and an MBA from the Wharton School of Business; she continues to star-gaze today. Laura’s other interests include her three lively children, chocolate, extreme vehicles, and Lego Mindstorms.

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