解:250÷5÷2等于( 25 )
∵已知需求出250÷5÷2等于多少
∴250 ÷ 5 ÷ 2
= 250 × 1/5 × 1/2
= 250 × (1/5 × 1/2)
= 250 × 1/10
= (25×10)/1 × 1/10
= 25
答:250÷5÷2等于25
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