Maths crossword puzzle

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Across
  1. 3. dice means that there is an probability of occurrence of any of the faces when dice is rolled
  2. 4. amount of consumption which will take place even when the income is zero
  3. 6. for stee is 1/2 [downstream speed -upstream speed]
  4. 7. means it occurs at the same time
  5. 8. number that succeeds another number or comes after the given number is called succeed
  6. 9. has been taken out or curved out from the cylinders surface area is called hollwed
Down
  1. 1. firm closely woven cloth usually of linen hemp is called canvas
  2. 2. Means how much so far
  3. 4. factor is a number used to change one set of units to another by multiplying or dividing
  4. 5. number that precedes another number or comes before the given number is called precede