综合套题十
21.8 × 10 =	8.9 ÷ 1000 =	77.3 + 43 =
3.77 × 1000 =	280 - 90 =	1000 ÷ 50 =
46.9 + 62.8 =	50 ÷ 1000 =	30 ×38 =
90 - 8.56 =	9.3 - 7.6 =	57 +285 =
2、简便计算
413 × 1534 - 413 × 534	171 + 488 + 363 + 629 + 337	82000 ÷ (25 × 82 )
567 × 21 + 567 × 79	7.72 - (2.92 + 4.72 )	25 × (4 × 64 )
3、四则运算与灵活运用
[702÷(2+7)+290]×4	7.86 + 7.6 - 2.67	1404 ÷ 6 ÷ 18 + 148
895 + 254 - 245	(352 ÷ 4 + 482) × 9	804 × 99
94 × 950 ÷ 19	58 × 125	( 325 + 375 ) ÷ 5