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

300–150 ={#blank#}1{#/blank#}    300+105 ={#blank#}2{#/blank#}    80+120={#blank#}3{#/blank#}

315–200={#blank#}4{#/blank#}     800–600 ={#blank#}5{#/blank#}    205+50 ={#blank#}6{#/blank#}

5×2+24 ={#blank#}7{#/blank#}    16÷4+20 ={#blank#}8{#/blank#}    35 + 15-40 ={#blank#}9{#/blank#}

450+370{#blank#}1{#/blank#}800      674-139{#blank#}2{#/blank#}545         520+280{#blank#}3{#/blank#}820+250

620{#blank#}4{#/blank#}270+350      1200{#blank#}5{#/blank#}800+210         189+42{#blank#}6{#/blank#}265-34