题目内容
7.28-3.33+1.67=7.28-5=2.28．
错误
分析：本题要按照四则混合运算的顺序进行计算，同级运算从左向右依次计算．
解答：7.28-3.33+1.67，
=3.95+1.67，
=5.62；
故答案为：×．
点评：此题如果是“7.28-3.33-1.67”的话，才可用原题答案．
分析：本题要按照四则混合运算的顺序进行计算，同级运算从左向右依次计算．
解答：7.28-3.33+1.67，
=3.95+1.67，
=5.62；
故答案为：×．
点评：此题如果是“7.28-3.33-1.67”的话，才可用原题答案．
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