综合套题七
86 - 67 =	604 - 457 =	6 × 8 + 653 =	1000 - 735 =
7 × (5 + 3) =	475 - 30 ÷ 5 =	4 × 7 - 19 =	(14 + 10) ÷ 4=
694 - 5 × 3 =	21 ÷ 3 + 719 =	(72 - 66) × 3=	185 + 309 =
708 - 149 =	342 + 609 =	93 - (28 + 47) =	21 ÷ (45 - 42) =
685 + 3 × 9 =	93 - 48 =	8 × (72 ÷ 8) =	235 + 117 =
37 + (26 - 17) =	24 ÷ 3 - 7 =	48 ÷ (2 × 4) =	66 - 59 + 55 =
478 + 30 ÷ 5 =	27 + 54 - 68 =	29 + 44 =	738 - 679 =
笔算下列各题（1、4小题要验算）
(1)    578 + 418 =		(2)    642 + 239 =
(3)    305 + 277 =		(4)    442 - 439 =
(5)    433 - 216 =		(6)    822 - 523 =