98.1*0.01+5*9.81+0.049*981
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98.1*0.01+5*9.81+0.049*98198.1*0.01+5*9.81+0.049*98198.1*0.01+5*9.81+0.049*981原式=981×0.001+981×0.05+
98.1*0.01+5*9.81+0.049*981
98.1*0.01+5*9.81+0.049*981
98.1*0.01+5*9.81+0.049*981
原式
=981×0.001+981×0.05+981×0.049
=981×（0.001+0.05+0.049）
=981×0.1
=98.1
98.1*0.01+5*9.81+0.049*981
9.81*0.1+0.5*98.1+0.049*981怎样简算
9.81*0.1+0.5*98.1+0.049*981的简便计算
用简便方法计算9.81*0.1+0.5*98.1+0.049*981
9.81*0.1+0.5*98.1+0.049*981怎样简算
9.81×0.1+0.5×98.1+0.049×981怎么算？
9.81*0.1+98.1*0.5+981*0.49的简便运算
9.81*0.1+0.5*98.1+0.049*981 列式
简便计算：9.81*10%+1/2*98.1+0.049*981 （注：其中1/2分式）
这道计算题怎么简算?9.81×0.1+0.5×98.1+0.049×981
求帮忙解决2道简算题.9.81×0.1+0.5×98.1+0.049×981999×222+333×334
计算下面各题.(能简算的要简算)谢谢,急.(1)9.81×0.1＋0.5×98.1＋0.049×981(2)1×2分之1＋2×3分之1＋3×4分之1＋4×5分之1＋……＋199×200分之1
12+[0.4*0.75+(0.5+?)*3]/0.3=98 等于几 9.81*0.1+0.5*98.1+0.049*981= 6789.6789/6.789=每题简算
由5个1、4个0.0、7个0.01组成的数是（ ）,这个数读作（ ）
脱式计算（能简算的要简算）①3 －2 ＋5 －1 ②14.85－1.58×8＋31.2÷1.2 ③（1 ＋2 ）÷（2－1 ） ④2.25× ＋2.75÷1 ＋60％ ⑤9.81×0.1＋0.5×98.1＋0.049×981 ⑥1000＋999－998－997＋996＋995－994－993＋…＋104
能用简算的用简算计：9.81 X 9.8 0.027+9.9X0.27（1）9.81X9.8 =9.81×（10-0.2）=98.1-1.962=96.138（2）0.027+9.9X0.27 =0.027+99×0.027=0.027×（1+99）=0.027×100=2.7
（9.81*3分之1-2.5）/5分之4
0.0