综合套题十
2.29 × 1000 =	4.1 ÷ 1000 =	68.3 × 10 =
39.1 + 26 =	7.6 - 4.7 =	410 - 40 =
70 ÷ 10000 =	8000 ÷ 50 =	21.8 + 46.6 =
125 ×64 =	90 - 5.22 =	579 +26 =
2、简便计算
473 + 311 + 127 + 636 + 289	801 - (222 + 401 )	99 × 982 + 982
68000 ÷ (68 × 25 )	1009 × 19	94 × 8 × 125
3、四则运算与灵活运用
3705 ÷ 19 ÷ 13 + 388	25 × 54	9.1 + 7.26 - 5.11
6754 - 289 - 1311 - 454	80900 ÷ ( 809 ÷ 72 )	6×[3×(63-33) +441]
230 + 39 × 9 - 326	455 × 999	4.42 - 2.09 + 4.58