综合套题十
50 ×84 =	5.35 × 1000 =	60 - 1.76 =
64.9 + 61.7 =	33 +979 =	82.6 × 100 =
4.4 + 5.32 =	9.4 - 6.8 =	2000 ÷ 50 =
10 ÷ 1000 =	520 - 80 =	5.1 ÷ 100 =
2、简便计算
3000 ÷ 25 ÷ 4	( 125 + 80 ) × 8	5.99 + 2.54 + 2.88 + 1.01 + 2.46
125 × (8 × 69 )	286 × 250 + 750 × 286	759 - 164 - 136
3、四则运算与灵活运用
815 - ( 315 - 172 )	6×[204÷(71-68)+300]	112 - 1728 ÷ 6 ÷ 16
8.34 + 1.21 - 4.37	99 × 255	125 × 40 × 25
(60 × 5 + 465) × 2	1642 ÷ 32 × 16	200 ÷ 25