1樓:匿名使用者
1、直接寫出得數。0.45×2.
5=62616964757a686964616fe4b893e5b19e313333613036381.1250.8×1.
25=10.3×3.6=1.
080.3×0.3=0.
0910×0.07=0.70.
92×0.4=0.3680.
2×0.26=0.0520.
14×4=0.560.02×0.
1=0.0021.2×0.
3=0.362.5×0.
4=12.4×5=120.22×4=0.
883.25×0=00.9-0.
52=0.383.99×1=3.
990×3.52=012.5×8=1008÷10=0.
810-1.8-7.2=10.
43+3.57=42.5×4×12=1440.
9×0.8=0.727.
5x-3x=4.5xa+3a+7a==11a1.05×100=1051÷0.
5=20.96÷3=0.320.
56×100=563.78×100=3784÷0.8=53.
215×100=321.50.8×10=84.
08×100=4081.1×0.2=0.
220.6×0.8=0.
483×0.9=2.72.
5×0.4=10.16×5=0.
81.78+2.2=3.
981.2×0.5-0.
4=0.20.7÷0.
01=702.5×0.4=112-3.
9=8.11.25×8÷1.
25=86.6÷0.66=105.
37×0+4.63=4.633.
9+2.03=5.937.
2+2.8=101.4×5=72、用豎式計算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)16.9÷0.
131.55÷3.93.
7×0.01613.76×0.
8=5.2×0.68.
4×1.36.4×0.
54.48×0.45.
25×535.4×4.20.
042×0.540.76×0.
320.12×0.5×0.
16=4.8×0.25=0.
125×1.4≈(保留兩位小數)2.5÷0.
7=(保留三位小數)10.1÷3.3=(商用迴圈小數)10.
75÷12.5=(用乘法驗算)3.25×9.
04=(用除法驗算)3、脫式計算(能簡算的要簡算)2.5×7.1×416.
12×99+16.125.2×0.
9+0.97.28×99+7.
284.3×50×0.264-2.
64×0.526×15.7+15.
7×24(2.275+0.625)×0.
283.94+34.3×0.
21.2×(9.6÷2.
4)÷4.88.9×1.
1×4.72.7×5.
4×3.93.6×9.
85-5.468.05×3.
4+7.66.58×4.
5×0.92.8×0.
5+1.5832+4.9-0.
94.8-4.8×0.
5(1.25-0.125)×84.
8×100.156.5×99+56.
57.09×10.8-0.
8×7.094.85+0.
35÷1.48.7×17.
4-8.7×7.412.
5×0.4×2.5×80.
87×3.16+4.649.
5×1010.68÷(5.2-3.
5)×1.2540.5÷0.
81×0.184.8×(15÷2.
4)2.13.×0.×82576.
81+6.81×990.25×185×404.
4×0.8-3.4×0.
8(9.37+9.37+9.37+9.37)×2.54.2.×1.
+1.×1.752.
37×6.3+2.37×3.
72.5×1.25×0.
323.8×10.12.
5×(3.8×0.04)7.
69×1013.8×10.10.
25×39+0.250.125×7246×0.
33+54×0.33(8×5.27)×1.
256.81+6.81×990.
25×185×406.8×0.75÷0.
53.75÷0.125–2.
751.53+23.4÷7.
29.5×9913.5×0.
9812.5×8.8補充回答:
脫式計算(能簡算的要簡算)7.28×99+7.284.
3×50×0.264-2.64×0.
526×15.7+15.7×24(2.
275+0.625)×0.283.
94+34.3×0.21.
2×(9.6÷2.4)÷4.8
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