1. digit - a number or a symbol that represents a number 2. cardinal number - a number that tells how many; example: 5 pencils 3. ordinal number - a number that tells order or position; example: 1st place or 10th in line 4. nominal number - a number that names things; example: a phone number 5. sum - answer to an addition problem 6. difference - answer to a subtraction problem 7. factor - the numbers multiplied together to get an answer; example: In the problem 8 x 7 = 56, 8 and 7 are the factors 8. prime number - a number that only has factors of 1 and itself; example: 2 is a prime number because its only factors are 1 and 2 9. composite number - a number that has more than 2 factors; example: 8 is a composite number because its factors are 1, 8, 2, 4 so it has more than 2. 10. equation - a number sentence with an equals sign in it; example: 10 + 4 = 14 or 351 x 1 + 10 = 361 11. product - the answer to a division problem 12. perimeter - the distance AROUND an object; ADD ALL THE SIDES 13. equivalent - numbers that are equal; 0.7 is equivalent to 0.700 14. mode - the number that occurs MOST often in a set of data 15. property of one - any number multiplied by 1 equals that number; 1 x 5 = 5 |