根据分析可得,
4÷(2-1)×(8-1),
=4×7,
=28(分钟);
答:把它锯成8段要用28分钟.
故答案为:28.
把一根木头锯成两段要用4分钟,如果锯成8段要用_分钟.
把一根木头锯成两段要用4分钟,如果锯成8段要用______分钟.
数学人气:269 ℃时间:2019-12-13 17:26:59
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