5．用简便方法计算：
| 0.125×0.25×8×4 | 7.2÷2.7 | 5.4÷0.25+4.6×4 |
| 4.8×9.9 | 84÷0.42÷2 | 27.8×5.64+71.2×5.64+5.64 |
1．能简算的一定要简算
0 159829 159837 159843 159847 159853 159855 159859 159865 159867 159873 159879 159883 159885 159889 159895 159897 159903 159907 159909 159913 159915 159919 159921 159923 159924 159925 159927 159928 159929 159931 159933 159937 159939 159943 159945 159949 159955 159957 159963 159967 159969 159973 159979 159985 159987 159993 159997 159999 160005 160009 160015 160023 199269
| 15.25-3.17+0.75-6.83 | 14.5×0.99 | 0.25×12.5×32 |
| 5.06×98-5.06+50.6×3 | 15.92-4.65-5.92 | 0.8×[13-（3.12+5.28）] |