12345679×9=111111111

12345679×18=222222222

12345679×27=333333333

196×0.8{#blank#}1{#/blank#}196         35×2.5{#blank#}2{#/blank#}35

0.78÷1.1{#blank#}3{#/blank#}0.78         6.2÷0.99{#blank#}4{#/blank#}6.2

①13×2=26       13×10={#blank#}1{#/blank#}      13×12={#blank#}2{#/blank#}

②25×4=100      25×8={#blank#}3{#/blank#}       25×24={#blank#}4{#/blank#}

5.26×1.05{#blank#}1{#/blank#}5.26        1.26÷0.98{#blank#}2{#/blank#}1.26

0.68×0.68{#blank#}3{#/blank#}0.68        36.5÷1.2{#blank#}4{#/blank#}36.5