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6.8×8.3＝
5.6×2.9＝
0.2×9.6＝
5.2×0.3＝
9.9×0.2＝
4.6×2.4＝
1.6×6.1＝
9.432×0.002＝
5.6×6.5＝
2.2×3.9＝ 7.8×8.5＝ 6.2×0.3＝
2.6×6.1＝ 5.9×0.2＝ 4.8×1.7＝ 5.7×5.7＝ 7.8×6.4＝ 1.5×4.9＝ 2.5×8.8＝ 9.6×2.85＝ 5.5×5.2＝
9.7×1.2＝ 3.8×5.1＝ 8.8×8.3＝
5.2×0.3＝ 9.9×0.2＝ 5.5×2.4＝ 1.6×6.1＝ 9.4×0.2＝ 5.6×6.5＝ 4.8×2.9＝ 5.6×2.1＝ 8.9×2.4＝
5.6×2.9＝ 3.7×1.8＝ 0.02×9.6＝
20lg518.71
99×0.125 95.7×0.89＋6.3×0.89－0.89×2 12.5×64+13.2 12.7×13－12.7×3 73×0.52＋0.73×48 2.16×3.43＋6.57×2.16 0.264×517＋0.264×483 99.9×1.53－0.53×99.9
66.5×99＋0.665×100 4.96×4.56＋49.6×0.544 2.59×0.47＋25.9×0.053 25.3×9.9＋2.53×1 3.65×12.5－36.5×0.25 86.8×99.9+8.68 3.9×13.5＋135×0.61 3.1×2.7＋27×0.69
3.6×0.52＋36×0.048 0.826×343＋0.657×826 0.264×457＋264×0.543 0.125×80+14.5 (99.62+0.38)×0.8 0.06×17.5-0.06×7.5 0.28×102 2.1×1.2×0.25
3.2×7.5＋75×0.68 18.8×99+18.8 13.72×4.6+6.28×4.6 5.5×0.99 39×10.1 0.66×65.1＋3.49×6.6 25×1.3×0.8 2.5×1.25×40×32
0.36×102 7.6×8+0.2×76 2.3×16+2.3×23+2.3 10.1×1.61-1.51×10.1 7.74×（2.8-1.3）+1.5×2.26 10.6×0.36-9.6×0.36 0.32×403 12.8×12.6+72×1.26
1.25×8.7×0.8 2.7×3.7+0.37×73 127×9.9 1.25×0.4×80×2.5 0.5×10.3×0.2 3.2×1.25 0.41×99 1.25×0.96
0.125×72 12.5×5.6 （20-4）×0.25 45×21-50×2.1 3.7×5×0.04 45×1.5+5.5×15 9.9×2.2+22×0.01 2.8×25+3.45
1.8×9+1.8 12.5×8.8 0.25×12 9.16×1.53-0.053×91.6 314×0.043+3.14×5.7 96×10.1 1.2×65.1+3.49×12 25×25.4×0.4
1.86×9.9＋18.6×0.01 1.2×9.9＋0.12 56.5×9.9＋5.65 2.4×0.19+0.24×8.1 7.09×10.8－8×0.709 1.25×2.5×32 18.6×9.9＋18.6×0.1 3.2×99＋3.2
56.5×9.9＋0.565×10 3.83×4.56＋38.3×0.544 3.14×0.68＋31.4×0.032 12.7×9.9＋1.27×1 3.65×4.7－36.5×0.37 12.9×99.9+1.29 4.8×7.8＋78×0.52 4.8×1.8＋18×0.52
2.5×26+2.5×6+8×2.5 25×26.8×0.04 0.25×32×0.125 18×12.5 (1.25－0.125)×0.8 3.72×6.4＋6.28×6.4 15.6×13.1－15.6－15.6×2.1 0.25×1.2×4
10.6×3.5-9.6×3.5 1.25×128×2.5 3.2×1.6＋6.8×1.6 0.85×199 1.65×10.1 0.05×9.9 1.9×99+1.9 8.88×12.8+7.2×8.88
0.25×6.4 0.25×0.79×4 3.5×10.1 7.6×0.8+0.2×7.6 0.75×9.9 0.25×9.5×4 12.8×8.6+7.2×8.6 12.5×0.96×0.8
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2.2×3.9＝ 7.8×8.5＝ 6.2×0.3＝
2.6×6.1＝ 5.9×0.2＝ 4.8×1.7＝ 5.7×5.7＝ 7.8×6.4＝ 1.5×4.9＝ 2.5×8.8＝ 9.6×2.85＝ 5.5×5.2＝
9.7×1.2＝ 3.8×5.1＝ 8.8×8.3＝
5.2×0.3＝ 9.9×0.2＝ 5.5×2.4＝ 1.6×6.1＝ 9.4×0.2＝ 5.6×6.5＝ 4.8×2.9＝ 5.6×2.1＝ 8.9×2.4＝
5.6×2.9＝ 3.7×1.8＝ 0.02×9.6＝
20lg518.71
99×0.125 95.7×0.89＋6.3×0.89－0.89×2 12.5×64+13.2 12.7×13－12.7×3 73×0.52＋0.73×48 2.16×3.43＋6.57×2.16 0.264×517＋0.264×483 99.9×1.53－0.53×99.9
66.5×99＋0.665×100 4.96×4.56＋49.6×0.544 2.59×0.47＋25.9×0.053 25.3×9.9＋2.53×1 3.65×12.5－36.5×0.25 86.8×99.9+8.68 3.9×13.5＋135×0.61 3.1×2.7＋27×0.69
3.6×0.52＋36×0.048 0.826×343＋0.657×826 0.264×457＋264×0.543 0.125×80+14.5 (99.62+0.38)×0.8 0.06×17.5-0.06×7.5 0.28×102 2.1×1.2×0.25
3.2×7.5＋75×0.68 18.8×99+18.8 13.72×4.6+6.28×4.6 5.5×0.99 39×10.1 0.66×65.1＋3.49×6.6 25×1.3×0.8 2.5×1.25×40×32
0.36×102 7.6×8+0.2×76 2.3×16+2.3×23+2.3 10.1×1.61-1.51×10.1 7.74×（2.8-1.3）+1.5×2.26 10.6×0.36-9.6×0.36 0.32×403 12.8×12.6+72×1.26
1.25×8.7×0.8 2.7×3.7+0.37×73 127×9.9 1.25×0.4×80×2.5 0.5×10.3×0.2 3.2×1.25 0.41×99 1.25×0.96
0.125×72 12.5×5.6 （20-4）×0.25 45×21-50×2.1 3.7×5×0.04 45×1.5+5.5×15 9.9×2.2+22×0.01 2.8×25+3.45
1.8×9+1.8 12.5×8.8 0.25×12 9.16×1.53-0.053×91.6 314×0.043+3.14×5.7 96×10.1 1.2×65.1+3.49×12 25×25.4×0.4
1.86×9.9＋18.6×0.01 1.2×9.9＋0.12 56.5×9.9＋5.65 2.4×0.19+0.24×8.1 7.09×10.8－8×0.709 1.25×2.5×32 18.6×9.9＋18.6×0.1 3.2×99＋3.2
56.5×9.9＋0.565×10 3.83×4.56＋38.3×0.544 3.14×0.68＋31.4×0.032 12.7×9.9＋1.27×1 3.65×4.7－36.5×0.37 12.9×99.9+1.29 4.8×7.8＋78×0.52 4.8×1.8＋18×0.52
2.5×26+2.5×6+8×2.5 25×26.8×0.04 0.25×32×0.125 18×12.5 (1.25－0.125)×0.8 3.72×6.4＋6.28×6.4 15.6×13.1－15.6－15.6×2.1 0.25×1.2×4
10.6×3.5-9.6×3.5 1.25×128×2.5 3.2×1.6＋6.8×1.6 0.85×199 1.65×10.1 0.05×9.9 1.9×99+1.9 8.88×12.8+7.2×8.88
0.25×6.4 0.25×0.79×4 3.5×10.1 7.6×0.8+0.2×7.6 0.75×9.9 0.25×9.5×4 12.8×8.6+7.2×8.6 12.5×0.96×0.8
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