Find the math words

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Across
  1. 3. - A two-dimensional shape with four sides four
  2. 5. using the equation
  3. 6. - math that contains shapes and figures
  4. 7. - represents a part of a whole
  5. 8. and four angles
  6. 9. - writing numbers using a decimal point to separate
  7. 10. - adding something to something else
Down
  1. 1. - Ways to solve math problem or making math easier
  2. 2. - taking something away from something
  3. 4. numbers from parts that are less than one