综合套题十
20 - 6.62 =	3.8 + 66.4 =	37.7 + 94 =
3.95 × 1000 =	820 - 60 =	9.3 ÷ 100 =
6.1 - 2.5 =	35.3 × 100 =	176 +78 =
60 ×77 =	60 ÷ 1000 =	400 ÷ 25 =
2、简便计算
7000 ÷ 4 ÷ 25	101 × 12	8.55 - (1.55 + 3.93 )
38 × 25 × 4	3.58 + 4.29 + 1.61 + 3.71 + 1.39	99 × 575 + 575
3、四则运算与灵活运用
459 ÷ 27	125 × 112	125 × 28 × 25
904 + 129 ÷ 3 × 8	89 × 220 ÷ 11	2.47 - 2.27 + 9.82
5×[(187-37)÷3+242]	4266 - 852 - 748 - 466	640 ÷ (16 × 10) + 215