急求！三百四十六道分数，小数除法口算题！

17 ×40＝680, 100－63＝37, 3.2＋1.68＝4.88, 2.8×0.4＝ 1.12 14－7.4＝6.6, 1.92÷0.04＝48, 0.32×500＝160, 0.65＋4.35＝ 5 10－5.4＝4.6, 4÷20＝0.2, 3.5×200＝700, 1.5－0.06＝1.44 0.75÷15＝0.05, 0.4×0.8＝0.32, 4×0.25＝1, 0.36＋1.54＝2 1.01×99＝99.99, 420÷35＝12, 25×12＝300, 135÷0.5＝270 3/4 1/4 =1, 2 4/9 =22/9, 3 - 2/3 =7/3, 3/4 - 1/2= 1/4 1/6 1/2 -1/6 =1/2, 7.5-(2.5 3.8)=1.2, 7/8 3/8 =5/4 3/10 1/5 =1/2, 4/5 - 7/10 =1/10, 2 - 1/6 -1/3 =1.5 0.51÷17＝0.03, 32.8＋19＝51.8, 5.2÷1.3＝4, 1.6×0.4＝ 0.64 4.9×0.7＝3.43, 1÷5＝0.2, 6÷12＝0.5, 0.87－0.49＝0.38 0.42除以0.21=2
9.63除以3.21=3
16.8除以2.1=8
6.28除以3.14=2
12.56除以6.28=2
25.12除以3.14=8
25.12除以6.28=4
28.26除以3.14=9
9.42除以3.14=3
50.24除以3.14=16

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