5.8×3.5+0.67÷0.1用简便算
问题描述:
5.8×3.5+0.67÷0.1用简便算
答
答案及步奏:
5.8×3.5+0.67÷0.1
=2.9×7+6.7
=(3-0.1)×7+6.7
=21-0.7+6.7
=21+6
=27
答
5.8×3.5+0.67÷0.1
=2.9×7+6.7
=(3-0.1)×7+6.7
=21-0.7+6.7
=21+6
=27
答
等于209.7