24×77-111×4+24×5(简便运算)
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/06 13:33:19
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24×77-111×4+24×5(简便运算)
24×77-111×4+24×5(简便运算)
24×77-111×4+24×5(简便运算)
24×77-111×4+24×5
=24×77+24×5-111×4
=24×(77+24)-111×4
=24×111-111×4
=111×(24-4)
=2220
=24*77-(111*4-24*5)
=24*77-4*(111-30)
=24*77-4*81
=4(6*77-3*27)
=4*3*(2*77-27)
=4*3*127
=1524