1+(-2)+3+(-4)+5+(-6)+7+(-8)+……+99+(-100)有8筐白菜,以每筐25千克为准超过的千克数记作正数,不足的千克数记作负数,称重的记录如下:1.5,-3,2,-0.5,1,-2,-2,-2.5,求这8筐白菜的总重量是多
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![1+(-2)+3+(-4)+5+(-6)+7+(-8)+……+99+(-100)有8筐白菜,以每筐25千克为准超过的千克数记作正数,不足的千克数记作负数,称重的记录如下:1.5,-3,2,-0.5,1,-2,-2,-2.5,求这8筐白菜的总重量是多](/uploads/image/z/565795-19-5.jpg?t=1%2B%EF%BC%88-2%EF%BC%89%2B3%2B%EF%BC%88-4%EF%BC%89%2B5%2B%EF%BC%88-6%EF%BC%89%2B7%2B%EF%BC%88-8%EF%BC%89%2B%E2%80%A6%E2%80%A6%2B99%2B%EF%BC%88-100%EF%BC%89%E6%9C%898%E7%AD%90%E7%99%BD%E8%8F%9C%2C%E4%BB%A5%E6%AF%8F%E7%AD%9025%E5%8D%83%E5%85%8B%E4%B8%BA%E5%87%86%E8%B6%85%E8%BF%87%E7%9A%84%E5%8D%83%E5%85%8B%E6%95%B0%E8%AE%B0%E4%BD%9C%E6%AD%A3%E6%95%B0%2C%E4%B8%8D%E8%B6%B3%E7%9A%84%E5%8D%83%E5%85%8B%E6%95%B0%E8%AE%B0%E4%BD%9C%E8%B4%9F%E6%95%B0%2C%E7%A7%B0%E9%87%8D%E7%9A%84%E8%AE%B0%E5%BD%95%E5%A6%82%E4%B8%8B%EF%BC%9A1.5%2C-3%2C2%2C-0.5%2C1%2C-2%2C-2%2C-2.5%2C%E6%B1%82%E8%BF%998%E7%AD%90%E7%99%BD%E8%8F%9C%E7%9A%84%E6%80%BB%E9%87%8D%E9%87%8F%E6%98%AF%E5%A4%9A)
1+(-2)+3+(-4)+5+(-6)+7+(-8)+……+99+(-100)有8筐白菜,以每筐25千克为准超过的千克数记作正数,不足的千克数记作负数,称重的记录如下:1.5,-3,2,-0.5,1,-2,-2,-2.5,求这8筐白菜的总重量是多
1+(-2)+3+(-4)+5+(-6)+7+(-8)+……+99+(-100)
有8筐白菜,以每筐25千克为准超过的千克数记作正数,不足的千克数记作负数,称重的记录如下:1.5,-3,2,-0.5,1,-2,-2,-2.5,求这8筐白菜的总重量是多少?
-|-3 3\4|-(-2 1\4)
10\3+(-11\4)+(+5\6)+(-7\12)
(-0.5)+(+9\2)+(-19\2)+9.75
1+(-2)+3+(-4)+5+(-6)+7+(-8)+……+99+(-100)有8筐白菜,以每筐25千克为准超过的千克数记作正数,不足的千克数记作负数,称重的记录如下:1.5,-3,2,-0.5,1,-2,-2,-2.5,求这8筐白菜的总重量是多
1+(-2)+3+(-4)+5+(-6)+7+(-8)+……+99+(-100)
-1*50=-50
有8筐白菜,以每筐25千克为准超过的千克数记作正数,不足的千克数记作负数,称重的记录如下:1.5,-3,2,-0.5,1,-2,-2,-2.5,求这8筐白菜的总重量是多少?
26.5+22+27+24.5+26+23+23+22.5 = 194.5
-|-3 3\4|-(-2 1\4)
1+(-2)+3+(-4)+5+(-6)+7+(-8)+……+99+(-100)
=1-2+3-4+5-6+7-8+……+99-100
=(1-2)+(3-4)+(5-6)+(7-8)+……+(99-100)
=-1×100÷2
=-50
1.5+(-3)+2+(-0.5)+1+(-2)+(-2)+(-2.5)+25×8=194.5(千克)
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1+(-2)+3+(-4)+5+(-6)+7+(-8)+……+99+(-100)
=1-2+3-4+5-6+7-8+……+99-100
=(1-2)+(3-4)+(5-6)+(7-8)+……+(99-100)
=-1×100÷2
=-50
1.5+(-3)+2+(-0.5)+1+(-2)+(-2)+(-2.5)+25×8=194.5(千克)
-|-3 3\4|-(-2 1\4)(题目不清楚,空格是什么)
10\3+(-11\4)+(+5\6)+(-7\12)
(-0.5)+(+9\2)+(-19\2)+9.75
分数写法错误。10\3是10分之3还是3分之10?如果是3分之10,应该写成3/10。
收起
194.5千克