解:3.6×4-5.2等于( 46/5 ),【即等于9.2】
∵已知需求出3.6×4-5.2等于多少
∴3.6 × 4 - 5.2
= (3×10+6)/10 × 4 - (5×10+2)/10
= 36/10 × 4 - 52/10
= 18/5 × 4 - 26/5
= 72/5 - 26/5
= 46/5
= 9.2
答:3.6×4-5.2等于46/5,【即等于9.2】
3.6*4-5.2
=14.4-5.2
=9.2
=14.4-5.2
=9.2