写出得数.232÷6≈28×23≈+=+1.8=0.94+2.06=0×0+4=25×40=888+222=80×70=50×40=600÷6=0÷4×8=
.
=
1990×2.8+199×51+1.99×2100.
524﹣(124﹣87)
94×56.87+94×43.48+6×100.35.