0.45×2.5＝ 0.8×1.25＝0.3×3.6＝ 0.3×0.3＝ 10×0.07＝0.3×1.4＝0.05×7＝ 0.92×0.4＝ 0.2×0.26＝ 0.14×4＝ 0.02×0.1＝1.2×0.3＝0.2×0.4＝8.2＋1.8＝ 100－35.22＝ 2.3×4＝
2.5×0.4＝2.4×5＝0.22×4＝3.25×0＝
0.9－0.52＝ 3.99×1＝ 0×3.52＝12.5×8＝
8÷10 = 10-1.8-7.2= 0.43+3.57=2.5×4×12=
0.9×0.8=7.5x-3x = a+3a+7a==1.05×100=1÷0.5=0.96÷3= 1.47÷0.7= 5.4÷6=
0.16.5×10=0.56×100= 3.78×100= 4÷0.8 =
3.215×100=0.8×10= 4.08×100=1.1×0.2 =
0.6×0.8 = 3×0.9= 2.5×0.4=3.6×0.4=
12.5×8=50×0.04= 80×0.3 = 1.1×9=
0.16×5 ＝ 1.78＋2.2 = 9.6÷0.6 =1.2×0.5-0.4 =0.7÷0.01 = 2.5×0.4 = 12－3.9=1.25×8÷1.25 = 6.6÷0.66 =5.37×0+4.63 = 3.9＋2.03＝4.2÷3.5＝
1.6+2.4×0.3 = 2.14－0.9＝27＋456＋73= 0.3×0.3=
7.2＋2.8＝0.9÷0.01＝12÷0.3= 2.87÷0.7＝
13÷4＝ 0.96÷0.3＝1.5×0.4＝ 7÷0.25＝ 2.5×0.7×0.8=8－2.5＝ 16÷1.6＝ 5.6×1.01= 8×（2.5＋0.25）＝ 0.36＋0.64＝ 64.32÷16＝ 4.2÷0.1＝
72.8÷0.8＝ 8.4÷4.2＝ 13.8＋9.9＝2.4×2.5＝
0.05×0.8＝ 2.56－0.37＝ 1.25×0.8×0.5＝12×2.5＝1.23×3＝3.2÷1.6＝ 3.5＋3.5×3＝ 19.6÷2＝ 8.8÷2.2= 0.75×4＝（1.5＋0.25）×4＝ 0.5×0.8=
8.4×0.2=1.6×0.2＝7.2×0.3= 2.8×0.3＝0.9÷0.15= 1.8×0.4=5.5÷0.55= 0.08×100=
2.2÷0.11=5.46＋4.54= 12.5×0.8= 0.35×0.3=
1.4×5=2.8×4=19.6÷4= 22.5×4=
2、用豎式計(jì)算
0.396÷1.2=0.756÷0.36=15.6×13=
0.18×15= 0.025×14=3.06×36=
0.04×0.12＝ 3.84×2.6≈ 5.76×3＝
（保留一位小數(shù)）
7.15×22 90.75÷3.33.68×0.25
16.9÷0.131.55÷3.93.7×0.016
13.76×0.8= 5.2×0.68.4×1.3

6.4×0.54.48×0.45.25×5
35.4×4.20.042×0.54 0.76×0.32


0.25×0.046 2.52×3.41.08×25
0.12×0.5×0.16＝ 4.8×0.25＝0.125×1.4≈
（保留兩位小數(shù)）
2.5÷0.7= （保留三位小數(shù)） 10.1÷3.3= （商用循環(huán)小數(shù)）
10.75÷12.5= （用乘法驗(yàn)算）3.25×9.04= （用除法驗(yàn)算）