7×14+14×48+25×4的脱式计算怎么写?
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解:7×14+14×48+25×4等于( 870 )
∵已知需求出7×14+14×48+25×4等于多少
∴7×14+14×48+25×4
= 98 + 672 + 100
= (100 - 2)+ (670 + 2)+ 100
= 100 - 2 + 670 + 2 + 100
= (100 + 670 + 100)+ (-2 + 2)
= (770 + 100)+ 0
= 870 + 0
= 870
答:7×14+14×48+25×4等于870
∵已知需求出7×14+14×48+25×4等于多少
∴7×14+14×48+25×4
= 98 + 672 + 100
= (100 - 2)+ (670 + 2)+ 100
= 100 - 2 + 670 + 2 + 100
= (100 + 670 + 100)+ (-2 + 2)
= (770 + 100)+ 0
= 870 + 0
= 870
答:7×14+14×48+25×4等于870
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7×14+14×48+25×4
=14x(7+48)+100
=14x55+100
=14x50+14x5+100
=700+70+100
=870
=14x(7+48)+100
=14x55+100
=14x50+14x5+100
=700+70+100
=870
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原式=14×(7+48)+25×4
=14×45+100
=630+100
=730
=14×45+100
=630+100
=730
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