12345679×18=222222222
12345679×27=333333333
12345679×36=
……
12345679×=888888888
①801÷89=
②432÷26=
③580÷32=
④592÷16=
⑤△228÷76=
⑥△990÷48=
803-207= ÷5= 798+150= + =
0.25×8= 1.5- = 7.5÷ = 0.77+0.3=
9.8-8= × = 45.54÷45= 24× =