综合套题十
9.55 × 1000 =	33.9 + 76.2 =	280 - 90 =
8.1 - 7.8 =	96 +449 =	39.7 × 100 =
800 ÷ 25 =	80 ÷ 1000 =	71.6 + 15 =
5.3 ÷ 1000 =	60 - 2.45 =	30 ×48 =
2、简便计算
108 × 17	25 × (4 × 23 )	1.15 + 1.92 + 2.73 + 4.85 + 3.08
72000 ÷ (25 × 72 )	8.49 - 1.15 - 2.85	414 × 53 + 47 × 414
3、四则运算与灵活运用
72 ÷ 18	88 × 125	656 ÷ 30 × 15
80 + 28 × 9 - 125	6.19 + 5.3 - 9.4	396 - 420 ÷ 7 ÷ 5
32500 ÷ ( 325 ÷ 23 )	[3×(75+82)-137]×2	3321 - 541 - 221 - 359