综合套题十
550 - 80 =	7.6 - 4.8 =	25 ×8 =
36.54 - 1.7 =	2.9 + 6.7 =	85.2 × 10 =
539 +73 =	9.69 × 1000 =	8.6 ÷ 100 =
7.7 + 3.88 =	700 ÷ 25 =	80 ÷ 10000 =
2、简便计算
125 × (8 × 57 )	292 + 162 + 597 + 208 + 303	275 + 275 × 999
747 - 292 - 108	903 × 133 - 33 × 903	97000 ÷ (97 × 125 )
3、四则运算与灵活运用
( 415 + 295 ) ÷ 5	56 × 25	7.98 + 3.48 - 9.44
933 - ( 533 - 421 )	1386 ÷ 9 ÷ 14 + 258	780 - 78 × 2 + 273
[5×(45+81)-368]×3	13000 ÷ 500	25 × 20 × 125