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计算下列各题(能用简便方法的用简便方法计算)0.1...

(1)0.125×8.75×8=0.125×8×8.75=1×8.75=8.75;(2)1.8÷0.5÷0.6=1.8÷(0.5×0.6)=1.8÷0.3=6;(3)12.75÷[14.6-(1.3+8.2)]=12.75÷[14.6-9.5]=12.75÷5.1=2.5;(4)0.7×10.1=0.7×(10+0.1)=0.7×10+0.7×0.1=7+0.07=7.07;(5)0.5x-7=28 0.5x-...

=0.89x(100+0.1) =0.89x100+0.89x0.1 =89+0.089 =89.089

26×10.1 =26x(10+0.1) =26x10+26x0.1 =260+2.6 =262.6 谢谢,请采纳

(1)4.82-5.2÷0.8×0.6,=4.82-6.5×0.6,=4.82-3.9,=0.92;(2)[ 1 2 -( 3 4 - 3 5 )]÷ 7 10 ,=[ 1 2 - 3 20 ]÷ 7 10 ,= 7 20 ÷ 7 10 ,= 1 2 ;(3) 7 9 × 5 11 + 2 9 × 5 11 ,=( 7 9 + 2 9 )× 5 11 ,=1× 5 11 ,= 5 11 ;(4)12....

(1)15.6-9.2-0.8,=15.6-(9.2+0.8),=15.6-10,=5.6;a-b-c=a-(b+c);(2)390÷15÷2,=390÷(15×2),=390÷30,=13;a÷b÷c=a÷(b×c);(3)38×75-38×55,=38×(75-55),=38×20,=760;a×b-a×c=a×(b-c).

4x0.28x2.5 =4x2.5x0.28 =10x0.28 =2.8

(1)75×205+6.25×205 =(75+6.25)×205 =81.25×205=16656.25;(1)125.46-8.23-1.7=125.46-(8.23+1.7)=125.46-9.93=115.53;(3)6.9+7.1×10=6.9+71=77.9;(4)12.5×3.2×250=(12.5×0.8)×(4×250)=10×1000=10000.

0.63乘以10.1如何用简便方法计算 解答: 0.63x10.1 =0.63x(10+0.1) =0.63x10+0.63x0.1 =6.3+0.063 =6.363

用简便方法来计算 3.49乘以11-0.1 =3.49×10+(3.49-0.1) =34.9+3.39 =38.29

因为加号前后两项都有19.4,可以将原式看为(19.4x0.9)+(19.4x0.1)=,既是19.4x(0.9+0.1)=,答案为19.4

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