发布网友 发布时间:2024-10-23 16:55
共1个回答
热心网友 时间:2024-11-03 12:58
①∵1km=103m,∴0.015km=0.015×103m=1.5×10m;
∵1km=104dm,∴0.015km=0.015×104dm=1.5×102m;
∵1km=105cm,∴0.015km=0.015×105cm=1.5×103cm;
∵1km=106mm,∴0.015km=0.015×106mm=1.5×104mm;
②∵1mm=10-3m,∴12.5mm=12.5×10-3m=1.25×10-2m;
∵1mm=10-6km,∴12.5mm=12.5×10-6km=1.25×10-5km;
③∵1nm=10-7cm,∴10nm=10×10-7cm=1.0×10-6cm;
∵1nm=10-9m,∴10nm=10×10-9m=1.0×10-8m;
④∵1h=60min,∴2.5h=2.5×60min=150min;
∵1h=3600s,∴2.5h=2.5×3600s=9000s;
⑤∵1s=160min,∴120s=120×160min=2min;
∵1s=13600h,∴120s=120×13600h≈0.03h.
故答案为:10;102;103;104;
10-2;10-5;
10-6;10-8;
150;9000;
2;0.03;