五年级下脱式计算12页.doc

脱式计算1. 3.8+4.29+2.71+6.22. 12.50.783.223. 12.899+12.84. 1.253.22.55. 12.610112.66. 38.52.50.47. 6.710.18. 6.51019. 4.859810. 1.22.5+0.82.511. 2817.5287.512. 4.812.513. 6/72/151/713/1514. 19/215/73/1415. 2/35/92/35/916. 8/9+（1/41/9）+3/417. 0.58+5/13+1.12+8/1318. 11-4/11-7/1119. 22+5511-2/820. 1/7+33.5+6/7-3.521. 7.09-5/12+12.03-7/1222. 14/15（6/15 +1/3）23. 13/50.81 0.1924. 7/8+1/8 5/9 4/9 25. 5 （0.5 3/10 ）26