综合套题十
64.1 + 85 =	60 ÷ 1000 =	34 +498 =
4000 ÷ 50 =	4.32 × 1000 =	16 ×125 =
6.1 - 5.7 =	330 - 60 =	9.7 ÷ 100 =
79.5 + 23.9 =	8.5 - 1.91 =	36.8 × 10 =
2、简便计算
603 - 125 - 275	9.33 + 1.47 + 5.89 + 1.53 + 3.11	1009 × 15
421 × 249 + 421 × 751	41000 ÷ (41 × 25 )	4 × (36 × 25 )
3、四则运算与灵活运用
162 ÷ 27	771 × 999	65300 ÷ ( 653 ÷ 74 )
( 460 + 170 ) ÷ 5	0.65 - 1.7 + 1.35	289 + 47 × 4 - 359
6.5 + 5.6 - 2.1	440 ÷ (5 × 8) + 215	5×[340÷(73-68)+269]