分析:(1)先去括号,再从左向右进行计算即可;
(2)从左向右进行计算即可;
(3)运用加法交换律和结合律简算;
(4)先算减法,再算加法;
(5)从左向右进行计算即可;
(6)运用加法的交换律、结合律进行简算.
解答:解:(1)7.5-(5.5+1.24)
=7.5-5.5-1.24
=2-1.24
=0.76;
(2)0.26+15.68+9.7
=15.94+9.7
=25.64;
(3)6.98+3.72+7.28-4.98
=(6.98-4.98)+(3.72+7.28)
=2+11
=13;
(4)13.26+9.55-3.26
=13.26-3.26+9.55
=10+9.55
=19.55;
(5)3.96-1.07+3.54
=2.89+3.64
=6.53;
(6)1.27+3.9+0.73+16.1
=(1.27+0.73)+(3.9+16.1)
=2+20
=22.
点评:此题是考查四则混合运算,要仔细观察算式的特点,灵活运用一些定律进行简便计算.