Maths crossword

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Across
  1. 2. (7+7)x2+8x3 order of operations
  2. 5. 1,569,899+1798 curriculum
  3. 8. 0.0054+0.0027 curriculum
  4. 10. 9 squared + 5 cubed indices
  5. 12. 57,000,000+74,000,000 curriculum
Down
  1. 1. 54,000,000-27,000,000 curriculum
  2. 3. 1,876+298 curriculum
  3. 4. 4 cubed - 7 squared indices
  4. 6. ((148-60)x2-76)x70 order of operations
  5. 7. 20,000- 1789 curriculum
  6. 9. 314.15-12.98 curriculum
  7. 11. 0.0057+0.0074 curriculum