1. (-3 2/5)+(-2 1/3)=_______________
2. (-4 1/6)-(-1 3/4)=_______________
3. (-52)÷(-4)=_______________
4. (-18)÷3/5=_______________
5. (-12)×7+(+19)=_______________
6. (-23)-(-80)÷5=_______________
將以下分數化為小數,並取答案至小數點後兩個位。
(i)17/4=_______________
(ii)4 5/13=_______________