计算下面各题,怎样简便就怎样计算。
(1)$628 - 113 - 287$ (2)$542 - 184 - 142$ (3)$871 - 243 - 471$
$=$ $=$ $=$
$=$ $=$ $=$
$=$ $=$ $=$
(4)$347 - 165 - 135$ (5)$354 - 72 - 54$ (6)$532 - 224 - 76$
$=$ $=$ $=$
$=$ $=$ $=$
$=$ $=$ $=$
(7)$832 - 245 - 432$ (8)$775 - 181 - 219$ (9)$763 - 425 - 63$
$=$ $=$ $=$
$=$ $=$ $=$
$=$ $=$ $=$
(10)$1030 - 544 - 456$ (11)$983 - 727 - 183$ (12)$1375 - 759 - 141$
$=$ $=$ $=$
$=$ $=$ $=$
$=$ $=$ $=$
(1)$628 - 113 - 287$ (2)$542 - 184 - 142$ (3)$871 - 243 - 471$
$=$ $=$ $=$
$=$ $=$ $=$
$=$ $=$ $=$
(4)$347 - 165 - 135$ (5)$354 - 72 - 54$ (6)$532 - 224 - 76$
$=$ $=$ $=$
$=$ $=$ $=$
$=$ $=$ $=$
(7)$832 - 245 - 432$ (8)$775 - 181 - 219$ (9)$763 - 425 - 63$
$=$ $=$ $=$
$=$ $=$ $=$
$=$ $=$ $=$
(10)$1030 - 544 - 456$ (11)$983 - 727 - 183$ (12)$1375 - 759 - 141$
$=$ $=$ $=$
$=$ $=$ $=$
$=$ $=$ $=$
答案:
628 - (113 + 287)@@628 - 400@@228@@542 - 142 - 184@@400 - 184@@216@@871 - 471 - 243@@400 - 243@@157@@347 - (165 + 135)@@347 - 300@@47@@354 - 54 - 72@@300 - 72@@228@@532 - (224 + 76)@@532 - 300@@232@@832 - 432 - 245@@400 - 245@@155@@775 - (181 + 219)@@775 - 400@@375@@763 - 63 - 425@@700 - 425@@275@@1030 - (544 + 456)@@1030 - 1000@@30@@983 - 183 - 727@@800 - 727@@73@@1375 - (759 + 141)@@1375 - 900@@475
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