Math Unit 4 Vocabulary

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Across
  1. 3. the size of each group or number of groups when the dividend is divided by the divisor; the answer to a division problem.
  2. 4. a whole number greater than 1 that has more than two factors.
  3. 7. the rules that say which calculation comes first when simplifying an expression (PEMDAS)
  4. 8. the number of square units a figure or region covers
  5. 12. the number the dividend is being divided by in a division problem.
  6. 13. if the order of the factors is changed, the product will remain the same; a × b = c; therefore, b × a = c
  7. 17. Numbers that are easy to add, subtract, multiply or divide mentally.
  8. 18. counting numbers and zero; 0, 1, 2, 3..
  9. 19. the number that is being divided.
  10. 21. when a number can be divided by another with a whole number quotient and no remainder.
  11. 23. if three or more factors are multiplied, they can be grouped in any order, and the product will remain the same; a × b × c = (a × b) × c = a × (b × c)
  12. 25. expressing a number to the nearest thousandths, hundredths, tenths, and so on as directed.
  13. 26. the value of a digit as determined by its location in a number
  14. 27. The answer when two or more factors are multiplied together.
  15. 28. The first place value after the decimal point; represents 1/10 of a whole.
  16. 29. a mathematical sentence that contains an equals sign.
Down
  1. 1. opposite operations, or ones that undo each other such as addition and subtraction or multiplication and division
  2. 2. a mathematical phrase involving only numbers and operations
  3. 5. a number that is not exact; a careful guess.
  4. 6. numbers that are multiplied together to get a product.
  5. 9. zeros in the decimal part of a number that follow the last non-zero digit; they do not change the value of the number
  6. 10. The second place value after the decimal point; represents 1/100 of a whole.
  7. 11. distance around a figure
  8. 14. the representation of a number as a product of the digit and its place value 57 = 5 x 10 + 7 x 1; includes multiplication
  9. 15. in multiplication a factor can be broken into pieces; 4 x 56 = 4 x 50 + 4 x 6
  10. 16. a whole number greater than 1 with only two factors, 1 and itself
  11. 20. a letter that represents an unknown number
  12. 22. the representation of a number as a sum of place values like 57 = 50 + 7
  13. 24. The third place value after the decimal point; represents 1/1000 of a whole.