26×15.7+15.2×24简便运算?
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由题意得知,可以这样进行简便运算
26×15.7+15.2×24
=26×(15.2+0.5)+15.2×24
=(26+24)×15.2+26×0.5
=50×15.2+13
=773
26×15.7+15.2×24
=26×(15.2+0.5)+15.2×24
=(26+24)×15.2+26×0.5
=50×15.2+13
=773
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=26×15.7+15.7×24-0.5×24
=(26+24)×15.7-12
=50×15.7-12
=785-12
=773
=(26+24)×15.7-12
=50×15.7-12
=785-12
=773
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26×15.7+15.2×24
=26×15.7+(15.7—0.5)×24
=(26+24)×15.7—0.5×24
=50×15.7—12
=785—12
=773
=26×15.7+(15.7—0.5)×24
=(26+24)×15.7—0.5×24
=50×15.7—12
=785—12
=773
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15.7可以写成15.2+0.5
=26×(15.2+0.5)+15.2×24
=26×15.2+26×0.5+15.2×24
=15.2×(26+24)+13
=15.2×50+13
=773
=26×(15.2+0.5)+15.2×24
=26×15.2+26×0.5+15.2×24
=15.2×(26+24)+13
=15.2×50+13
=773
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26×15.7+15.2×24简便运算如下:
26×15.7+15.2×24
=26×(15.2+0.5)+15.2×24
=26×15.2+26×0.5+15.2×24
=15.2×(26+24)+26×0.5
=7.6×2×50+13
=7.6×100+13
=773
26×15.7+15.2×24
=26×(15.2+0.5)+15.2×24
=26×15.2+26×0.5+15.2×24
=15.2×(26+24)+26×0.5
=7.6×2×50+13
=7.6×100+13
=773
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