四年级下册数学拓展题:35/2525-36/2424

日期:2022-04-10 12:38:42 人气:1

四年级下册数学拓展题:35/2525-36/2424

35×2525-36×2424
=35x2525-(35x2424+1×2424)
=35×2525-35×2424-2424
=35×(2525-2424)-2424
=35×100+35-2424
=3500+35-2424
=3535-2424
=1111
    A+
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