Major Inventions

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Across
  1. 1. 9999-364=_____
  2. 3. 85+50=____
  3. 5. 750-____=250
  4. 6. 6000+300+20+1
  5. 7. 1090+____=1100
Down
  1. 1. 10000-129 = ______
  2. 2. 5689-5666=____
  3. 3. 190-____=85
  4. 4. ____ is added 10 times to get 560
  5. 5. 500+002