综合套题十
80 - 4.53 =	9000 ÷ 50 =	16.9 + 63.3 =
3.3 - 2.5 =	69 +769 =	70 ÷ 1000 =
81 ×70 =	7.9 ÷ 100 =	420 - 30 =
52.7 × 10 =	9.68 × 1000 =	7.1 + 9.16 =
2、简便计算
6000 ÷ 125 ÷ 8	294 + 354 + 106 + 401 + 146	15 × 1007
822 - 153 - 147	8 × (34 × 125 )	161 × 30 + 70 × 161
3、四则运算与灵活运用
540 ÷ 45	68 × 640 ÷ 16	8.92 + 3.7 - 7.19
962 - 265 - 562	[6×(87+75)-464]×2	198 × 98
885 + 228 ÷ 6 × 8	196 + 962 - 955	348 - 765 ÷ (15 × 17)