Mont: proportionality and factorisation

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Across
  1. 4. When an increase in one quantity causes a proportional decrease in another.
  2. 6. A factor that is a prime number (a number that has exactly two distinct positive divisors: 1 and itself).
  3. 10. A relationship between two quantities where the ratio of the two quantities is constant.
  4. 11. The smallest common multiple of two or more numbers.
  5. 14. The process of breaking down an expression into a product of its factors.
  6. 15. A number that is a multiple of two or more numbers.
  7. 16. A number that is a factor of two or more numbers.
  8. 17. The result of multiplying a number by an integer.
Down
  1. 1. A ratio that compares two different kinds of numbers, such as miles per hour or dollars per pound.
  2. 2. A mathematical phrase involving at least one variable and sometimes numbers and operation symbols.
  3. 3. When an increase in one quantity causes a proportional increase in another.
  4. 5. The property which states that multiplying a sum by a number gives the same result as multiplying each addend by the number and then adding the products.
  5. 7. The relationship between two numbers indicating how many times the first number contains the second.
  6. 8. The largest factor that two or more numbers have in common.
  7. 9. The process of increasing or decreasing the size of a quantity while maintaining its proportionality.
  8. 12. The number in a term with a pronumeral that represents the proportion.
  9. 13. A number that divides into another number exactly.