题目内容
计算.
3.09×3.9÷2.6 | 3.072÷6.4+49.7 | 60.8-36÷7.5. |
考点:小数四则混合运算
专题:运算顺序及法则
分析:(1)从左往右依次运算.
(2)先算除法,再算加法.
(3)先算除法,再算减法.
(2)先算除法,再算加法.
(3)先算除法,再算减法.
解答:
解:(1)3.09×3.9÷2.6
=12.051÷2.6
=4.635;
(2)3.072÷6.4+49.7
=0.48+49.7
=50.18;
(3)60.8-36÷7.5
=60.8-4.8
=56.
=12.051÷2.6
=4.635;
(2)3.072÷6.4+49.7
=0.48+49.7
=50.18;
(3)60.8-36÷7.5
=60.8-4.8
=56.
点评:此题考查了小数的四则混合运算的运算顺序和运算法则.
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