分数加减混合运算习题81074.doc
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1、 - = - + + = =- + + + 2 = 1 - = = = = = = = = 1 = = = = = = = = = = = = = = = 7= += =+= = 5= 5- = 1-=+ = + = 2 + = 0.25= = + = + = + = += -= 0.74+ = 0.375+ 1 + = 1= = + = = = + = 1 = + = - = = = + + 1= - = + = + = + = += = 1 5= 5=0.32= 12.58= 80.4 2.54= 7-6.38 360.9 = 50.001 = 1360 = 0.80.02 = 0.36+
2、1.54 1355 0.62= 4.80.6= 1.7+3= 0.73.5= 1.2516= 9.632= 20.09= 26.2626= 4.576.43= 50.001= 2.54= 0.48120 1.0199 4.3-1.6= 0.97= 0.6+7= 0.220.5 1.258= 0.9100= 0.6416= 10-9.12= 0.8125= 3.21.78 四、计算下面各题,能简算的要简算。8.50.241.76 7.9117.9 3.1432 7.5(2.53.8) 51.4 - 0.45 0.8125-10 10-4.8-3.2 7.81.177.80.17 2.651.7+
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