Where has 07 year (people's Education Edition) the first day mathematics positive and negative number examination paper (takes the answer) thank you~

Where has 07 year (people's Education Edition) the first day mathematics positive and negative number examination paper (takes the answer) thank you~

Rational number exercise 1 (Level B) (1) calculation: (1) 23 + (- 73) (2) (- 84) + (- 49) (3) 7 + (- 2.04) (4) 4.23 + (- 7.57) (5) (- 7 / 3) + (- 7 / 6) (6) 9 / 4 + (- 3 / 2) (7) 3.75 + (2.25) + 5 / 4 (8) - 3.75 + (+ 5 / 4) + (- 1.5) (2) simple calculation: (1) (- 17 / 4) + (- 10 / 3)