
直接写出得数. 4.5+2.7= 0.21×4= 210÷0.7= 3.9×2÷3.9×2= 2.5×8= 4.5÷0.5= 10-0.
直接写出得数.4.5+2.7=0.21×4=210÷0.7=3.9×2÷3.9×2=2.5×8=4.5÷0.5=10-0.42=0.62÷0.62-1=...
直接写出得数. 4.5+2.7= 0.21×4= 210÷0.7= 3.9×2÷3.9×2= 2.5×8= 4.5÷0.5= 10-0.42= 0.62÷0.62-1=
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4.5+2.7=7.2, | 0.21×4=0.84, | 210÷0.7=300, | 3.9×2÷3.9×2=4, |
2.5×8=20, | 4.5÷0.5=9, | 10-0.42=9.58, | 0.62÷0.62-1=0. |
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