简便计算题大全四年级

158 262 138375 219 381 2255001-247-1021-232(181 2564) 2719378 44 114 242 222276 228 353 219(375 1034) (966 125)(2130 783 270) 101799 999 9999 999997755-(2187 755)2214 638 2863065-738-1065899 3442357-183-317-3572365-1086-214497-2992370 19953999 4981883-39812257524138254(13125)(38)(12 24 80)5070425253212532(25 125)88125102765898178101-1788436 64847599 27583102-8329819912318-1233 8512350(344)325(24 16)17899 1787942 79 795773002548100475168001203010021003200040049700700124824315015480025215001252356-(1356-721)1235-(1780-1665)7527 192 531870 133104(2565 2528)(1)(78 61) 39 (2)700-82-18(3)348 163 242 410 537(4)12547-4725 (5)201316(6)374-205 226-95 (7)3000-999(8)9977 21 (9)87470 87053(10)(55 55 55 555)125(11)125(8 40)25 (12)99 4999(13)26497 4264(14)454 999999 545(15)999936 6666332(16)12438 65124 76110-767(17)624 445 518(18)3400-6234-3820-3814(19)199219911991-199119901990(20(2 4 6100)-(1 3 599)1.2.73 0.89 1.272.4.37 0.28 1.63 5.721.10 - 0.432 - 2.5682.9.3 - 5.26 - 2.743.13.4-(3.4-5.2)4.14.9-(5.2-4.9)5.18.32 - 5.47 - 4.326.17.29 - 5.28 - 6.291.25 6.8 0.042.0.25 32 0.1253.6.4 1.25 12.51.0.45 2012.0.58 10.13.50.2 994.4.7 9.95.3.28 5.7 6.72 5.76.2.1 99 2.17.1.7 9.9 0.178.23 0.1 2.3 9.91.0.18 4.26 -0.18 4.262.0.58 1.3 0.58 1.33.7.3 4 2.7 0.254.3.75 0.5 - 2.75 25.5.26 0.125 2.74 8a b c=a (b c)6.6.3 1.87.4.2 3.58.9.5 (1.9 8)9 . 12 . 8