综合套题十
670 - 90 =	93.8 + 87 =	8.5 ÷ 100 =
16 ×25 =	10 ÷ 10000 =	1000 ÷ 50 =
96.1 × 10 =	89 +765 =	89.4 + 99.7 =
90 - 7.06 =	4.84 × 1000 =	9.2 - 3.4 =
2、简便计算
502 - (129 + 202 )	84 × 25 × 4	105 × 18
316 + 566 + 329 + 184 + 371	212 × 101 - 212	34000 ÷ (34 × 25 )
3、四则运算与灵活运用
410 - 72 ÷ (3 × 4)	( 320 + 445 ) ÷ 5	205×771-4×205-205×67
(73 × 7 + 245) × 8	725 - 202 - 325	179 × 999
25 × 36	[(72+45)×2-211]×6	4.3 - 3.9 + 7.69