8千米8000米 2米2分米 1023998 80958096
7×8= 35÷7= 28+72= 86-26=
64÷8= 800+900= 9×5= 2000-500=
﹣ = + = 0.25+ = ﹣ = 4×2.5=
0×98.56= 45×11= 0.85﹣15%= 0.65×101﹣0.65=
×10÷ ×10=