问题
解答题
计算:96-95+94+93-92+91+…+6-5+4+3-2+1.
答案
96-95+94+93-92+91+…+6-5+4+3-2+1,
=(96-95+94)+(93-92+91)+…+(6-5+4)+(3-2+1),
=95+92+…+5+2,
=(95+2)×32÷2,
=1552.
计算:96-95+94+93-92+91+…+6-5+4+3-2+1.
96-95+94+93-92+91+…+6-5+4+3-2+1,
=(96-95+94)+(93-92+91)+…+(6-5+4)+(3-2+1),
=95+92+…+5+2,
=(95+2)×32÷2,
=1552.