分析:(1)依據(jù)等式的性質(zhì),方程兩邊同時(shí)減56求解,
(2)依據(jù)等式的性質(zhì),方程兩邊同時(shí)加970求解,
(3)依據(jù)等式的性質(zhì),方程兩邊同時(shí)減6.6求解,
(4)依據(jù)等式的性質(zhì),方程兩邊同時(shí)除以25求解,
(5)依據(jù)等式的性質(zhì),方程兩邊同時(shí)乘16求解,
(6)依據(jù)等式的性質(zhì),方程兩邊同時(shí)乘1.2求解.
解答:解:(1)X+56=102,
X+56-56=102-56,
x=46;
(2)x-970=270,
x-970+970=270+970,
x=1240;
(3)6.6+x=24.5,
6.6+x-6.6=24.5-6.6,
x=17.9;
(4)25x=5,
25x÷25=5÷25,
x=0.2;
(5)x÷16=16,
x÷16×16=16×16,
x=256;
(6)x÷1.2=1.5,
x÷1.2,1.2=1.5×1.2,
x=1.8.
點(diǎn)評(píng):本題主要考查學(xué)生依據(jù)等式的性質(zhì)解方程的能力.