{#blank#}1{#/blank#}＜{#blank#}2{#/blank#}＜{#blank#}3{#/blank#}＜{#blank#}4{#/blank#}＜{#blank#}5{#/blank#}

11-10=         2+10=            18-8=

10+3=          16-6=            14-10=

13-3+4=        17-2-10=         15-2+4=

7+6{#blank#}1{#/blank#}14        18-3{#blank#}2{#/blank#}7+7     9+4{#blank#}3{#/blank#}11    5+8{#blank#}4{#/blank#}14

6+5{#blank#}5{#/blank#}12        6+8{#blank#}6{#/blank#}6+9      6+5{#blank#}7{#/blank#}11      4+8{#blank#}8{#/blank#}10

6+9{#blank#}9{#/blank#}9+6      12{#blank#}10{#/blank#}6+6        2+7{#blank#}11{#/blank#}9       3+9{#blank#}12{#/blank#}12

13+<20        10->9-5

10+<15        11+4<18-

12+<18        19->3+6