综合套题十
8.99 × 1000 =	3.9 ÷ 100 =	488 +49 =
52.7 × 10 =	330 - 70 =	69.9 + 16.6 =
4.7 - 3.9 =	8000 ÷ 50 =	60 - 2.02 =
10 ÷ 1000 =	60 ×48 =	2.4 + 5.71 =
2、简便计算
8000 ÷ 125 ÷ 8	( 700 + 4 ) × 25	317 + 317 × 99
551 + 325 + 314 + 149 + 186	575 - (375 + 112 )	25 × (4 × 19 )
3、四则运算与灵活运用
276 - 968 + 975	250 - 630 ÷ 5 ÷ 14	375 ÷ 25
5×[(280-92)÷4+474]	( 420 + 465 ) ÷ 5	47 × 770 ÷ 11
(68 × 9 + 219) × 2	125 × 68 × 25	8.45 - 7 + 5.63