ID 388

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ID 397

Imagine a wall of 24 bricks.

Three of the bricks are painted white.

Which fraction of the wall is white?

ID 429

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ID 463

If 1 gram of grass seed is needed to plant 1 square meter, how much grass seed will be needed to plant an entire field that is 100 meters long and 64 meters wide?

ID 586

ID 782

ID 1062

ID 1068

ID 1299

ID 1341

ID 1418

What is the difference between the largest and the smallest possible three-digit numbers that you can make, where each number uses all three digits 1, 2 and 3?

ID 1632

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ID 1679

John's heart beats at a rate of 80 beats a minute at rest.

The rate doubles during the one hour of exercise he performs per day.

How many (twenty-four hours) days will it take his heart to beat 1,200,000 times?

ID 1818

ID 1842

Each of four children chose one of the following numbers: 1, 2, 3, 4.

They then multiply the chosen numbers.

What number can be the product of those numbers?

ID 1862

On September 4, 1781, the full name of Los Angeles was

El Pueblo de Nuestra Señora la Reina de Los Ángeles del Río de Porciúncula.

How many times shorter than the full name is the abbreviated name?

ID 1879

ID 1882

John has an iPad with a 1024 x 768 pixel resolution.

He believes that his next iPad resolution will be 2048x1536 pixels.

Compare the resolutions.

ID 2050

John was ranked fifth from the top and sixteenth from the bottom after a test.

How many students were there in his class?

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ID 3254

ID 3382

ID 3441

Ann has $777 and Bill has $1,111.

How much money does Bill need to give to Ann, so that they would have the same amount of money?

ID 3451

ID 3538

Anna brought 30 candies to share, and Bill brought 12 candies to share. There are 14 children in the class. How many candies does each child receive?

ID 3593

ID 3628

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ID 3666

ID 3690

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ID 4057

Find the minimum value of

1 ? 2 ? 3 ? 4 ? 5 ? 6 ? 7 ? 8 ? 9

where each "?" is either a "+" or a times symbol "x".

ID 4220

ID 4223

ID 4559

A 999-spot parking lot is divided into 3-color sections.

There are 321 spots in the blue section, and 12 more in the yellow section.

How many spots are in the green section?

ID 4806

Express 0.56 as a reduced fraction.

(A reduced fraction is one in which the top and bottom numbers have no common factors.)

ID 4829

ID 4848

Which mathematical symbol can be placed in the blank to make the statement correct?

22222222 x 88 _____ 22 x 88888888

ID 4878

ID 5262

ID 5294

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ID 5421

This is a beautiful tile picture of the Spanish city of Ronda.

It is 21 tiles wide and 13 tiles high.

How many tiles are there?

ID 5655

There has long been disagreement as to whether the Nile or the Amazon is the world's longest river.

If the Nile in Africa is 6853 km long and the Amazon in South America is 6992 km long, how much longer is the Amazon than the Nile?

ID 5724

What is the difference between the largest and smallest of the numbers in the list below?

0.123 0.03 0.0021 0.321 1.021

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ID 6367

Leslie Green asks:

What is the sum of ten tenths, one hundred hundredths, and one thousand thousandths?

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ID 6673

Two positive whole numbers, neither of which contain the digit 0, multiply to 1000.

Find the difference of these two numbers.

ID 6954

How many times do two directly adjacent letters (a pair of letters right next to each other) have to be exchanged in order to change the word FIRE step by step into the word RIFE?

ID 7015

ID 7021

Gerry visited a cheese store and bought Swiss cheese for $25 every Wednesday and Saturday in February.

How much money did he spend on cheese in February?

ID 7318