1. 横线上最大能填几？

×4＜30                 7×＜63

5×＜47         ×8＜53

5×8={#blank#}1{#/blank#}   8×6={#blank#}2{#/blank#}   9×1={#blank#}3{#/blank#}   4×9={#blank#}4{#/blank#}

9×9={#blank#}5{#/blank#}   3×9={#blank#}6{#/blank#}   6×7={#blank#}7{#/blank#}   9×1={#blank#}8{#/blank#}

9×5={#blank#}9{#/blank#}   2×9= {#blank#}10{#/blank#}

{#blank#}1{#/blank#}×8＜36      9×{#blank#}2{#/blank#}＜44      34＞{#blank#}3{#/blank#}×7

5×{#blank#}4{#/blank#}＜31      54＞{#blank#}5{#/blank#}×7      39＞{#blank#}6{#/blank#}×6

5×{#blank#}1{#/blank#}<28      44> {#blank#}2{#/blank#}×6      65>{#blank#}3{#/blank#}×8

61> {#blank#}4{#/blank#}×7     50>9×{#blank#}5{#/blank#}      2×{#blank#}6{#/blank#}<15