5.4×2.5+12.5的最简便计算?
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5.4×2.5+12.5
=5×2.5+12.5+0.4×2.5
=12.5+12.5+1
=26
=5×2.5+12.5+0.4×2.5
=12.5+12.5+1
=26
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5.4×2.5+12.5的最简便计算:
5.4×2.5+12.5
=5.4×2.5+5×2.5
=2.5×(5.4+5)
=2.5×(5+0.4+5)
=2.5×(10+0.4)
=25+1
=26
5.4×2.5+12.5
=5.4×2.5+5×2.5
=2.5×(5.4+5)
=2.5×(5+0.4+5)
=2.5×(10+0.4)
=25+1
=26
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5.4×2.5+12.5
=(5+0.4)×2.5+5×2.5
=(5+5)×2.5+0.4×2.5
=25+1
=26
=(5+0.4)×2.5+5×2.5
=(5+5)×2.5+0.4×2.5
=25+1
=26
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5.4x2.5+12.5
=(5+0.4)x2.5+5x2.5
=(5+5)x2.5+0.4x2.5
=25+1
=26
=(5+0.4)x2.5+5x2.5
=(5+5)x2.5+0.4x2.5
=25+1
=26
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