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Use number 1, 2, 3, 4, 5, 6, 7, 8, and 9 to fill
in the boxes to make the sum of the calculation to be 100.
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A five digit number is represented by ABCDE.
If we add the number 1 in front of ABCDE, then times 3, the result number will be ABCDE appended by the number 1 . What is
this five digit number ?
1ABCDE
X 3
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ABCDE1
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What number should replace the question mark below?
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5 |
2 |
B |
5 |
4 |
D |
5 |
|
1 |
8 |
H |
1 |
3 |
A |
3 |
|
6 |
4 |
G |
3 |
7 |
F |
? |
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There are 3 glasses. The biggest one can hold
24 ounces. The medium one can hold 11 ounces and the smallest one can hold 5 ounces. Now you have 24 ounces of soft drink
in the largest glass. Can you use just these 3 glasses to make the largest glass contain 12 ounces of soft drink by pouring
soft drink from one glass to another?
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A^2+B^2+C^2+D^2= 85^2
Sum of 4 Squares is a square of 85:
A, B, C and D are either a single-digit or double-digit
number. If A < B < C < D, what are A, B, C, and D? |
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The image shows the
normal magic square with numbers from 1 to 9. The sum of each row, column, and diagonal is 15.
Can you make a three by three magic square in which the product of each row, column,
and diagonal is 1000? In each square you should have a different number.
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Fill in the boxes with 1, 2, 3, 4, 5, 6, 7, 8, and 9 to
make the multiplication equation work.
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