解:(1)97×103-3×97
=(103-3)×97,
=100×97,
=9700;
(2)11.3-0.46+9.7-0.54
=11.3+9.7-(0.46+0.54),
=20-1,
=198;
(3)4000÷125÷8
=4000÷(125×8),
=4000÷1000,
=4;
(4)8.47-(5.47-2.38)
=8.47-5.47+2.38,
=3+2.38,
=5.38.
分析:(1)可根據(jù)乘法分配律計(jì)算;
(2)可根據(jù)加法交換律及一個(gè)數(shù)減兩個(gè)數(shù),等于用這個(gè)數(shù)減去這兩個(gè)數(shù)的和的減法性質(zhì)計(jì)算;
(3)可根據(jù)一個(gè)數(shù)除以兩個(gè)數(shù),等于用這個(gè)數(shù)除以這兩個(gè)數(shù)的積的除法性質(zhì)計(jì)算;
(4)可根據(jù)一個(gè)數(shù)減兩個(gè)數(shù)的差,等于用這個(gè)數(shù)減去兩個(gè)數(shù)中的被減數(shù)加上減數(shù)的減法性質(zhì)計(jì)算.
點(diǎn)評(píng):完成此類題目要認(rèn)真分析題目中數(shù)據(jù)的特點(diǎn),然后運(yùn)用合適的方法計(jì)算.