6.54 △ 0.3 + 6.54 △ 0.6? Simple calculation?

6.54 △ 0.3 + 6.54 △ 0.6? Simple calculation?


54,



How to calculate 1.25 + 0.75 * 0.54
Can 1.25 + 0.75 * 0.54 be simply calculated and written


1.25+0.75*0.54
＝0.25*5+0.3*0.25*0.54
＝0.25（5+0.3*0.54）
＝0.25*（5+1.62）
＝0.25*6.62
＝0.5*3.31
＝1*3.31/2
＝1.655



68:17,18:54,1 / 20:1 / 40


Four to one



18 seconds: 54 minutes (Simplified)


Change to the same unit
18 seconds: 54 minutes
=18：（54*60)
=1:(3*60)
=1:180

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