rounding off puzzle 3

123456
Across
  1. 1. twenty-three thousand, nine hundred and eighty-seven
  2. 3. 40,000+3000+800+7
  3. 5. 58000 divided by 100 is
  4. 6. 267 when rounded to nearest hundred
Down
  1. 1. next term of the pattern 50, 100, 150, 200
  2. 2. sum of 2tens, 4 tens and 8 tens
  3. 4. 843 when rounded to nearest tens
  4. 6. smallest possible number made by using the digits 8, 9, 0, 3