Across
- 3. Which numerical single- digit value was discovered by an ancients Indian mathematician.
- 4. This ancient device was a predecessor of the modern calculating machine and is still widely used in Japan and China. It consists of a set of beads on rods with each rod denoting place value. Name this instrument.
- 7. The number that a variable is being multiplied with is called ____.
- 8. 6.023×10^23 is _______constant?
- 9. - A weighty currency.
- 11. What set of positive integers satisfies the equation, a squared + b squared = c squared?
- 15. Name the Greek who said these things. All right angles are equal to one another. A finite line segment can be extended to a line of any length.
- 17. How many eights are required to get the number 1,000? (Only use addition).
- 18. A mathematical phrase with operators connecting numbers and variables is an ___________.
Down
- 1. In 200 B.C., Eratosthenes found the Sun's rays were vertical at Syene and 7 1/2 degrees from vertical at Alexandria. He knew the distance between the two cities. What was he able to calculate using these data? He was able to calculate the ______ of earth.
- 2. Ancient Greeks said a natural number is perfect if the sum of all its divisors except itself equals the number. Which number is perfect?
- 5. In a certain code PRINCIPAL is written as mboqsomvw and TEACHER is written as FDVSZDB. find the code for CAPITAL.
- 6. The numerals used by today's mathematicians were developed in ...
- 9. The Sieve of Eratosthenes is used to find ____ number.
- 10. The point of intersection of axes.
- 11. What do mathematics teachers like to eat?
- 12. How many 9's are there between 1 and 100?
- 13. John Napier introduced what system of notation as a computational tool in 1614?
- 14. A and B are sisters, R and S are brothers. Daughter of A is sister of R. Then which relation between B and S
- 16. Each row of beads on an abacus stands for a different power of...