填上“＞”、“＜”或“＝”。、 70+80{#blank#}1{#/blank#}70+60 5800–800{#blank#}2{#/blank#}6000–3000 130+70{#blank#}3{#/blank#}200+20
700–90{#blank#}4{#/blank#}700–80 1200–200{#blank#}5{#/blank#}1000+200 500–50{#blank#}6{#/blank#}400+50
100+50{#blank#}7{#/blank#}200–60 100–60{#blank#}8{#/blank#}100-70
-130=60
{#blank#}1{#/blank#}