综合套题十
8.91 × 1000 =	4.4 + 7.67 =	50 - 4.92 =
7.7 ÷ 1000 =	25.2 × 10 =	860 - 70 =
9.1 - 5.8 =	80 ÷ 10000 =	87.2 + 53.9 =
4000 ÷ 50 =	94 +788 =	90 ×77 =
2、简便计算
91000 ÷ (91 × 125 )	885 - (308 + 385 )	25 × (4 × 38 )
441 × 160 - 60 × 441	5.85 + 1.33 + 9.37 + 3.15 + 3.67	478 × 746 + 254 × 478
3、四则运算与灵活运用
5×[216÷(42-36)+465]	773 - ( 173 - 986 )	( 125 + 135 ) ÷ 5
288 ÷ 72	377×405-405×54-23×405	927 + 67 × 8 - 113
168 ÷ 2 ÷ 14 + 434	6.78 + 4.97 - 7.42	809 - 245 - 309