989998 3个0.130个百分之一
3.7×1.0 10.9×3.7 n÷0.9(n>0)
AF
AC
BD
CE
DF
37Cm
12Cm
11Cm
16Cm
68+32= 10-0.6= 1.25×80= 0.8÷0.04=
2.4÷ = × = 5×8%= ÷ =
①250-250÷25×2
②18÷ ×
③5.2÷0.4÷2.5
④(34- )÷17
⑤4.3×1.75-1.75+ ×6.7
⑥ ×[(72.8-69.6)÷ ]