9.9×22+33×0.34怎么简便计算?
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原题可能有误
9.9×2.2+33×0.34
=33×(0.3×2.2)+
33×0.34
=33×0.66+33×0.34
=33×(0.66+0.34)
=33×1
=33
9.9×2.2+33×0.34
=33×(0.3×2.2)+
33×0.34
=33×0.66+33×0.34
=33×(0.66+0.34)
=33×1
=33
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=11×(19.8+1.02)
=11×21
=11×(20+1)
=220+11
=231
=11×21
=11×(20+1)
=220+11
=231
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