综合套题十
620 - 70 =	14.4 × 100 =	4.3 - 2.8 =
20.52 - 5.8 =	4000 ÷ 50 =	25 ×16 =
427 +85 =	70 ÷ 1000 =	1.8 ÷ 1000 =
12.7 + 99.9 =	2.21 × 1000 =	40.2 + 85 =
2、简便计算
534 × 814 + 186 × 534	6000 ÷ 125 ÷ 8	341 + 669 + 446 + 259 + 254
104 × 14	763 - 241 - 159	84 × 125 × 8
3、四则运算与灵活运用
1366 ÷ 50 × 25	391 - 315 ÷ 7 ÷ 9	7.57 - 4.79 + 0.43
962 - 181 - 562	300 ÷ 25	[(151+65)÷9+174]×3
(267 ÷ 3 + 444) × 4	2.92 + 5.45 - 7.43	64 × 25