五年级算术练习 630 90 = 639 71 = 726 33 =819 13 = 340 68 = 902 41 =744 62 = 357 17 = 280 40 = 7.9 6.7 = 6.2 4.9 = 5.4 6.8 =7.14 3.4 = 62.32 8.2 = 5.5 4.1 =1.9 20 = 8.3 10 = 0.7 50 = 74.77 + 23.96 = 99.32 - 47.25 = 68.87 + 24.61 47 744 = 86 417 = 86 232 =98 949 = 701 69 = 432 67 = 900 60 = 60 10 = 730 40 = 930 40 = 100 20 = 900 60 =500 2 = 900 9 = 50 7 =5.68 7.1 = 61.6 7.7 = 1.4 + 9.5 =