- 12+14+18+116+132+164+1128.
- 1-2+3-4+5-6+…+2001-2002的值是______.
- (1686+1683+1689+1681+1691+1685+1687+1678)÷8.
- 计算:1-2+3-4+5-6+7-8+9-10+11-12+13-14+15=______.
- (1)5+6+7+8+9+10+11+12+13+14+15=______.(2)27+28+29+30+31+32+33=______×7.
- 36加上4,减去8,再加上4,再减去8…这样连续地做下去,做______次计算结果得0.
- 32÷3×12=______10+12+14+…+24+26=______.
- 计算:1+2+3+…+111+112+111+…+3+2+1=______.
- 计算:(2+4+6+…+2012)-(1+3+5+…+2011)=______.
- 计算 78+76+83+82+77+80+79+85.
- 计算:3687-222-363-478-687-1637=______.
- 0.9+0.99+0.999+0.9999+0.999993333×3333.
- 1+2+3+4+…+99+100+99+…+4+3+2+1.
- 计算:100-99+98-97+96-95+94-93+93-92+91=______.
- 1993+1994+1995+1996+1997+1998+1999+2000=______.