综合套题十
70 ×99 =	200 ÷ 25 =	920 - 30 =
2.69 × 1000 =	3.9 ÷ 100 =	93.4 × 10 =
8.6 - 3.9 =	3.1 + 4.59 =	18.12 - 4.6 =
584 +39 =	82.4 + 16.7 =	10 ÷ 1000 =
2、简便计算
25 × (4 × 93 )	( 800 + 4 ) × 25	663 + 288 + 361 + 237 + 139
7.63 - 1.41 - 2.59	492 × 58 + 42 × 492	3000 ÷ 8 ÷ 125
3、四则运算与灵活运用
578 - 33 × 3 + 235	7 + 9 - 4.4	( 445 + 195 ) ÷ 5
495×316-316×2-93×316	517 + 603 - 596	25 × 20 × 125
4467 - (567 + 144 )	1260 ÷ 14 ÷ 15 + 320	5×[7×(60-53) +182]