直接写出得数.647-298= 6.6÷0.2= 71.2×1000= 1÷7+ 6 7 = 1-1× 1 3 =
直接写出得数.647-298=6.6÷0.2=71.2×1000=1÷7+67=1-1×13=56×34=0.23=13×2÷13×2=1.02-0.43=1.7-0.2...
直接写出得数.647-298= 6.6÷0.2= 71.2×1000= 1÷7+ 6 7 = 1-1× 1 3 = 5 6 × 3 4 = 0.2 3 = 1 3 ×2÷ 1 3 ×2= 1.02-0.43= 1.7-0.25-75%=
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