①5x﹣
②
③5x﹣14×0.5=56
④24:=32:x
= ﹣0.25= 0÷5=
= 5.4×= 80×0.7=
196﹣69=
× =
÷ =
6.22+44.78=
6÷2%=
3﹣3÷7=
+ =
+ ÷ =
598+403≈
0.125×3.2=
24÷ =
0.5×0.6÷0.5×0.6=
n=1时,长方形ABCD分为2个直角三角形,总计数出5条边;
n=2时,长方形ABCD分为8个直角三角形,总计数出16条边;
n=3时,长方形ABCD分为18个直角三角形,总计数出33条边;
...
总结以上规律,请你回答:当n = 100时,长方长方形ABCD应分为多少个直角三角形,总计数出多少条边?
36+48= 9.2-4.6= 560÷10= 12.5÷0.5=
- = 56× = 0.32= 2021×0.125×8=