Write the three whole numbers occurring just before 10001.

• We can find the whole number occurring just before 10,001 by subtracting 1 from 10,001, which would be

  10,001 – 1 =10,000

• We can find the whole number occurring just before 10,001 by subtracting 1 from 10,000 which would be

  10,000 – 1 =9,999

• We can find the whole number occurring just before 10,001 by subtracting 1 from 9999 which would be

  9,999 – 1 =9,998

Therefore, three whole numbers occurring just before 10,001 are 10,000, 9,999 and 9,998.