分析:(1)103=100+3,然后再根據乘法分配律進行簡算;
(2)先算乘法,再算減法;
(3)99=100-1.然后再根據乘法分配律進行簡算;
(4)根據乘法分配律進行簡算;
(5)先算加法,再算乘法;
(6)先算乘法,再算加法;
(7)先算加法,再算減法;
(8)先算減法,再算加法.
解答:解:
(1)103×0.8,
=(100+3)×0.8,
=100×0.8+3×0.8,
=80+2.4,
=82.4;
(2)3.15×100-3.15,
=315-3.15,
=311.85;
(3)3.15×99,
=3.15×(100-1),
=3.15×100-3.15,
=315-3.15,
=311.85;
(4)5.9×3.3+5.9×7.7,
=5.9×(3.3+7.7),
=5.9×11,
=64.9;
(5)5.9×(3.3+7.7),
=5.9×11,
=64.9;
(6)100×0.8+3×0.8,
=80+2.4,
=82.4;
(7)5.36+4.38-2.36,
=9.74-2.36,
=7.38;
(8)5.36-2.36+4.38,
=3+4.38,
=7.38.
故答案為:
.
點評:完成本題要注意分析式中數據,運用合適的簡便方法計算.