综合套题十
6.3 - 3.9 =	800 ÷ 25 =	80.9 + 35.9 =
7.5 ÷ 100 =	48.6 + 74 =	69.1 × 10 =
20 ×34 =	5.23 × 1000 =	369 +56 =
50 ÷ 1000 =	510 - 30 =	62.42 - 9.5 =
2、简便计算
128 + 189 + 472 + 703 + 611	125 × ( 30 + 8 )	4 × (51 × 25 )
541 × 78 + 22 × 541	2000 ÷ 8 ÷ 125	733 - (233 + 376 )
3、四则运算与灵活运用
323 - 147 ÷ 3 + 260	792 ÷ 116 × 29	2550 ÷ 10 ÷ 15 + 275
607 - ( 107 - 299 )	7.13 + 3.9 - 2.1	38 × 125
4×[156÷(80-78)+427]	429 - 192 - 129	466 × 999