8×8÷8×8= 2100÷30= 108×5= 1000÷20=
400÷80×0= 423÷72≈ 299×41≈ 10-2.95=
①900-457-243
②700÷25
③181+84+19+216
④88×125
⑤25×7×4
⑥39×39+61×39