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直接写得数.2/5%1/10= 16÷2/7= 1/2÷3/5= 1/7×1...

25-110=310 16÷27=56 12÷35=56 17×17=149 14×25=110 56-12=13 27×0+9=9 35×121=135 27×21=6 1417÷7=217 1÷5-15=0 47+47×6=4 (18+48)×45=12 6×5÷

这是几年级的数学题呀

1.2÷0.3=4, 28.7-7.2-12.8=8.7, 0.01×999+0.01=10, 1 2 + 1 3 = 5 6 , 10-0.5=9.5, 2.5×5×4=50, 1 4 - 1 5 = 1 20 , 6 7 ÷6 = 1 7 , ( 5 11 + 7 44 )×44=27, 5 8 + 2 15 + 3 8 =1 2 15 .

2/7×14/15=4/15 6/7÷3=2/7 12÷6/11=22 3/4÷9/16=4/3 25×40%=10 20×【1/4-1/5]=1 1÷2/5=5/2

100%-1=0, 40×5%=2, 30%+10%=0.4, 2.1÷70%=3, 65%-25%=0.4, 2.5×100%=2.5, 1 8 ÷ ( 1 2 - 1 3 )= 3 4 , 2×3.14×4.5=28.26.

1.2×0.1=0.12; 7.7÷11=0.7; 6.7×1.1=7.37; 9.8×9.8÷9.8=9.8;3.2÷0.16=20; 8.8÷2.2=4; 7.2×9+7.2=72; 8.9×11-8.9=89;4.7-1.5-0.5=2.7; 0.8×5×0.2=0.8.

7分之1×12分之7= (12/49) 6×3/8=(9/4) 2/9÷1/3=(2/3) 2÷2/3=(3) 3/4×5/6=(5/8) 1/5×2/3=(2/15) 2/5 1/2÷1/4=(2)

您好: 9/4×7/26=63/104 49/71×7/28=49/284 2/64×4/31=1/248 2/71×3/5=6/355 4/11×1/10=2/55 不明白,可以追问 如有帮助,记得采纳,谢谢 祝学习进步!

2÷0.5=40.24÷0.2=1.20.4÷8=0.056÷0.02=3001.3×0.2=0.267.2÷0.8=98×0.5=42.8+8=3.60.39÷0.03=130.1×0.1=0.013.2-2.9=0.321÷0.3=700.25×6=1.50.7×1.1=0.779.6÷10=0.960÷4.86=0

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