综合套题十
8.2 + 4.85 =	33.4 × 10 =	9.3 - 7.7 =
60 - 8.34 =	2.5 ÷ 1000 =	978 +85 =
720 - 50 =	8 ×25 =	6000 ÷ 50 =
80 ÷ 10000 =	8.94 × 1000 =	43.9 + 80.2 =
2、简便计算
4 × (92 × 25 )	21000 ÷ (125 × 21 )	259 × 1785 - 259 × 785
752 - (172 + 252 )	1001 × 565 - 565	207 + 295 + 118 + 593 + 382
3、四则运算与灵活运用
25 × 16	44 × 900 ÷ 18	5.44 + 5.2 - 3.6
225 - 1170 ÷ (13 × 18)	3×[124÷(35-31)+175]	973 - 111 - 473
998 × 394	25 × 24 × 125	553 + 350 ÷ 7 × 5