0.38+0.06=      (155+20)-65=      64.2+5.7=        543-27-73=

0.97-0.09=       12.8-9.86=         17.05-4.58 =      9800÷25÷4=

3.5+0.6=         5-0.15=            4.35+5.36=       99×66+66=

0.81+0.09=       0÷78=             50－20÷5=       35×25×4=

①25×5+75×5

②6.74+12.62+24.38+3.26

③87-2.123-0.877

④30.65-（7.65+5.4）

⑤（40+8）×125

⑥32×38+32×62