题目内容

38+0.06=________;  (155+20)-65=________; 64.2+5.7=________;  
543-27-73=________;0.97-0.09=________; 12.8-9.86=________;
17.05-4.58=________;  9800÷25÷4=________;3.5+0.6=________;   
5-0.15=________;   4.35+5.36=________;   99×66+66=________;  
0.81+0.09=________;   0÷78=________;      50-20÷5=________;    
35×25×4=________.

38.06    110    69.9    443    0.88    2.94    12.47    98    4.1    4.85    9.71    6600    0.9    0    46    3500
分析:依据整数,小数四则运算计算方法解答.
解答:38+0.06=38.06; (155+20)-65=110; 64.2+5.7=69.9; 543-27-73=443;0.97-0.09=0.88; 12.8-9.86=2.94; 17.05-4.58=12.47; 9800÷25÷4=98;3.5+0.6=4.1; 5-0.15=4.85; 4.35+5.36=9.71; 99×66+66=6600; 0.81+0.09=0.9; 0÷78=0; 50-20÷5=46; 35×25×4=3500.
点评:本题主要考查学生对于整数、小数四则运算计算方法的掌握.
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