简便计算99.9x111十33.3×66.7?
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99.9x111+33.3x66.7
=3x33.3x111+33.3x66.7
=33.3x(3x111+66.7)
=33.3x(333+66.7)
=33.3x399.7
=33.3x400-33.3x0.3
=13320-9.99
=13310.01
=3x33.3x111+33.3x66.7
=33.3x(3x111+66.7)
=33.3x(333+66.7)
=33.3x399.7
=33.3x400-33.3x0.3
=13320-9.99
=13310.01
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99.9*111+33.3*66.7
=33.3*3*111+33.3*66.7
=33.3*(333+66.7)
=33.3*399.7=13310.01
=33.3*3*111+33.3*66.7
=33.3*(333+66.7)
=33.3*399.7=13310.01
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99.9×111+33.3×66.7
=33.3×(3×111)+33.3×66.7
=33.3×333+33.3×66.7
=33.3× (333+66.7)
=33.3×399.7
=33.3×(400-0.3)
=33.3×400-33.3×0.3
=13320-9.99
=13310.01
=33.3×(3×111)+33.3×66.7
=33.3×333+33.3×66.7
=33.3× (333+66.7)
=33.3×399.7
=33.3×(400-0.3)
=33.3×400-33.3×0.3
=13320-9.99
=13310.01
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99.9x111十33.3×66.7
=33.3x3x111+33.3x66.7
=33.3x(333+66.7)
=33.3x399.7
=13310.01
=33.3x3x111+33.3x66.7
=33.3x(333+66.7)
=33.3x399.7
=13310.01
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解:99.9x111+33.3x66.7
=99.9x111+99.9x66.7÷3
=99.9x(111+66.7÷3)
=99.9x133
≈13286.7
=99.9x111+99.9x66.7÷3
=99.9x(111+66.7÷3)
=99.9x133
≈13286.7
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