Mystery Numbers Follow these instructions, and the sum of the numbers circled will always add up to 34. |
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| 1. Circle any number, then cross off all other numbers in the horizontal row and vertical column. | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 |
| 2. Repeat this process for another number and then a third number. | |
| 3. Circle the only number that is left over. | |
| 4. The sum of the circled numbers will always add up to 34, no matter which numbers you circle. | |
Try it! |
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Multiplying Ones together can give some odd results.
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1 x 1 = 1 |
11 x 11 = 121 |
111 x 111 = 12,321 |
1,111 x 1,111 = 1,234,321 |
11,111 x 11,111 = 123,454,321 |
111,111 x 111,111 = 12,345,654,321 |
1,111,111 x 1,111,111 = 1,234,567,654,321 |
11,111,111 x 11,111,111 = 123,456,787,654,321 |
111,111,111 x 111,111,111 = 12,345,687,987,654,321 |
Can you find the pattern? |
1... 2... 3... |
If you started counting at a rate of one number per second, how long would it take you to reach one billion? |
Math Illusion |
Don't be fooled by what you see, there is more than meets the eye. |
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It all depends on how you look at it. |
Muscle Math |
It takes 17 muscles to smile. How many does it take to frown? |
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