综合套题十
2000 ÷ 50 =	78 +235 =	20.7 × 10 =
5.8 + 10.5 =	31.43 - 3.5 =	90.5 + 96 =
2.6 ÷ 1000 =	620 - 30 =	7.5 - 2.7 =
30 ÷ 10000 =	125 ×8 =	8.13 × 1000 =
2、简便计算
99 × 757 + 757	9.98 - (2.45 + 2.98 )	218 + 187 + 682 + 511 + 313
724 × 190 - 724 × 90	72 × 8 × 125	83000 ÷ (25 × 83 )
3、四则运算与灵活运用
961×437-437×38-23×437	5.5 + 5.2 - 3.22	[(74+63)×9-488]×3
9247 - (856 + 347 )	203 × 98	3018 - 1375 - 118 - 325
375 ÷ 25	494 - 800 ÷ (4 × 10)	(25 × 9 + 974) × 2