题目内容
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.
=(96-95+94)+(93-92+91)+…+(6-5+4)+(3-2+1),
=95+92+…+5+2,
=(95+2)×32÷2,
=1552.
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