Rational numbers and algebra crossword

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Across
  1. 1. When we multiply fractions we have to multiply the numerators and which other part of the fraction?
  2. 5. Calculate 73.6 divided by 3.2.
  3. 6. Find x if 3x minus a hundred is equal to twenty six.
  4. 8. 3y + 11 = -1 -y. Find y.
  5. 10. A number that can be written as a fraction a/b is what type of number?
  6. 12. What feature does an equation have that an expression does not have?
Down
  1. 2. A child has height 82cm when he is 5 years old. He grows 9cm every year. How tall is the child at age 11 in centimetres?
  2. 3. What is two and a half add three and a quarter?
  3. 4. 5x - 3 = -13. Find x.
  4. 7. x+7 = 11. Find x.
  5. 9. What is 3.7 + 9.3?
  6. 11. A child has height 82cm when he is 5 years old. He grows 9cm every year. After x years, the child is 82 + ___x cm tall?