1 ①5 .2 5×1.8 ②1 2 .6÷2.8 ③1 7 .4 8 ÷7.6 ④7 0 .3－17.48 ⑤3 .2 4×1.02 ⑥0 .3 5÷1.4 ⑦1 .2 8×0.45 ⑧1 .4 5＋1 8 .5 ⑨2 6÷1.6 ⑩1 .3 6 5÷0.35 ①7 .6 ÷0.32 ②1 .5 6 ÷0.13 ③3 6 .8＋1.56 ④1 0 8 ÷2.7 ⑤2 0 .5×5.8 2 ⑥5 .8 ÷0.25 ⑦6 2 .5×4.08 ⑧1 0 4 .7 8 ÷26 ⑨7 9 .5 ÷0.3 ⑩3 .8 5 ÷2.5 ①6 .4 8 ÷1.2 ②1 6 .0 6 ÷5.5 ③4 .5×1.8 ④6 ÷1.5 ⑤1 5 .2 ÷0.37 ⑥6 2 ÷0.6 ⑦0 .2 5 ÷1.8 ⑧1 2 4 ÷53（保 2 位） ⑨7 4 ÷0.014 ⑩5 8 .5 ÷0.39 3 ①0 .2 4 6÷1.2 ②1 9 2÷1.2 ③3 9 4 .8÷0.28 ④0 .3 1 5÷0.18 ⑤2 1 .0 5÷4.5 ⑥0 .6 6÷0.3 ⑦0 .9÷0.045 ⑧1 6 2÷8.1 ⑨5 2 .5÷0.75 ⑩5 0 .4÷0.014 ①2 7 .3÷0.12 ②1 8÷0.54 ③9 .6×40 ④1 7×10.2 ⑤2 5×0.18 4 ⑥1 0 .2×17 ⑦9 .6÷40 ⑧6 .4 2÷24 ⑨3 .9 1÷0.17 ⑩0 .4 9 2÷12 ①1 .3 8×20 ②5 .4 6÷1.5 ③5 .0 6÷23 ④2 .0 5÷0.82 ⑤3 .9 5＋33.6 ⑥2 2 .7 8÷3.4 ⑦9 .0 7＋2.278 ⑧1 .0 8×0.8 ⑨4 4 .2 8÷4.1 ⑩7 1÷2.5 5 ①7.28＋13.2 ②32÷2.5 ③0.75×180 ④18÷0.15 ⑤0.23×4.5 ⑥2.07÷0.23 ⑦10.8÷45 ⑧19.76÷0.52 ⑨8.84÷0.17 ⑩21÷0.14 ①48÷0.6 ②0.96÷0.03 ③25.8÷6 ④22.8÷3 ⑤19.76÷5.2 6 ⑥246.4÷13 ⑦30×0.01 ⑧12.9-8.5 ⑨7.2×0.4 ⑩314-202 ①0.45×2.5 ②100－35.22 ③12.5×8 ④0.43+3.57 ⑤1.47÷0.7 ⑥12.5×8 ⑦9.6÷0.6 ⑧1.78＋2.2 ⑨9.6÷0.6 ⑩6.6÷0.66 7 ①3.9＋2.03 ②2.87÷0.7 ③64.32÷16 ④72.8÷0.8 ⑤0.36＋0.64 ⑥2.56－0.37 ⑦0.396÷1.2 ⑧3.84×2.6 ⑨13.76×0.8 ⑩10.75÷12.5
