18={#blank#}2{#/blank#}×9

8×1 =          7×4 =         8×8 =       9×4 + 9 =      8×6+3 =

9×9=          8×7=          7×7=       6×5 – 5 =      8×4 – 5 =

5×4=          2×8=          5×9=       7+9+7=         9×8 – 8 =

{#blank#}1{#/blank#}×{#blank#}2{#/blank#}+{#blank#}3{#/blank#}={#blank#}4{#/blank#}

或{#blank#}5{#/blank#}×{#blank#}6{#/blank#}－{#blank#}7{#/blank#}={#blank#}8{#/blank#}

①45-(12+18)

②63÷9+16

③7×(6÷2)

④5×4+10

⑤32÷8×7

⑥9÷(63÷7)

⑦9×2÷6

⑧27÷(3×3)