Rational Number

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123456
Across
  1. 3. A number × its reciprocal = ? .
  2. 4. Addition is ________ .
  3. 5. Reciprocal is also known as ________.
  4. 6. All fractions are _______ .
Down
  1. 1. multiplication is ________ .
  2. 2. is identity element of addition .