1m50cm=m 9.2m2=dm2
<<<<
890÷1000= 1-0.05= 25×4÷25×4=
3.26×1000= 328+64-28= 0.21×100÷10=
0.83+0.27= 80×101= 125×25×8=
①8000÷25÷4
②125×32×25
③101×82-82
④125×[84-(100-24)]
⑤99×45+45
⑥4.02-3.5+0.98