题目内容
计算下列各题.
4.83+52.4+6.37 | 41.7-5.66-3.91 | 6.3-5.98+6.17 |
97-(0.75+2.31) | 7.69+(3.21-1.17) |
分析:(1)(2)(3)从左往右依次计算;
(4)(5)先算括号内的,再算括号外的.
(4)(5)先算括号内的,再算括号外的.
解答:解:(1)4.83+52.4+6.37
=57.23+6.37
=63.6;
(2)41.7-5.66-3.91
=36.04-3.91
=32.13;
(3)6.3-5.98+6.17
=0.32+6.17
=6.49;
(4)97-(0.75+2.31)
=97-3.06
=93.94;
(5)7.69+(3.21-1.17)
=7.69+2.04
=9.73.
=57.23+6.37
=63.6;
(2)41.7-5.66-3.91
=36.04-3.91
=32.13;
(3)6.3-5.98+6.17
=0.32+6.17
=6.49;
(4)97-(0.75+2.31)
=97-3.06
=93.94;
(5)7.69+(3.21-1.17)
=7.69+2.04
=9.73.
点评:解答此题,应注意运算顺序和运算法则.
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