198×0.53要简便运算
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198×0.53要简便运算198×0.53要简便运算198×0.53要简便运算=(200-2)*(0.5+0.03)=200*0.5+200*0.03-2*0.5-2*0.03=100+6-1-0.0
198×0.53要简便运算
198×0.53要简便运算
198×0.53要简便运算
=(200- 2)*(0.5+0.03)
=200*0.5+200*0.03-2*0.5-2*0.03
=100+6-1-0.06
=104.94
200乘0.53-2乘0.53=104.96
我不会打乘号,汗……
(200-198)x(0.53-0.3)
=2x0.5+2x0.3
=1+0.6
=1.6
(200-2)*(0.5+0.03)=100-1+6-0.06=104.94
(200-2)*0.53
106-1.06
=104.94
(200-2)*0.53=200*0.53-2*0.53=2*53-2*0.53=106-1.06=104.94