①8-{#blank#}1{#/blank#}=0                   

②{#blank#}2{#/blank#}+10=17

③{#blank#}3{#/blank#}-{#blank#}4{#/blank#}=2              

④{#blank#}5{#/blank#}+{#blank#}6{#/blank#}=10

10-3{#blank#}1{#/blank#}7       9-4{#blank#}2{#/blank#}5        10-8{#blank#}3{#/blank#}4

4+5{#blank#}4{#/blank#}8        7-2{#blank#}5{#/blank#}8         2+6{#blank#}6{#/blank#}8

7-1{#blank#}7{#/blank#}5        6+3{#blank#}8{#/blank#}3         9-3{#blank#}9{#/blank#}7

5+3=          8+0=          10-3=        7-2-3=

2+8=          10-5=          6-2=         9-4+4=

1+4=           7-0=          6+3=         4+5+1=