题目内容
计算:5.62×49-5.62×39+43.8=________.
100
分析:根据乘法分配律计算前面的两项,再相加即可求解.
解答:5.62×49-5.62×39+43.8,
=5.62×(49-39)+43.8,
=5.62×10+43.8,
=56.2+43.8,
=100.
故答案为:100.
点评:考查了小数四则混合运算,灵活运用运算定律简便运算.
分析:根据乘法分配律计算前面的两项,再相加即可求解.
解答:5.62×49-5.62×39+43.8,
=5.62×(49-39)+43.8,
=5.62×10+43.8,
=56.2+43.8,
=100.
故答案为:100.
点评:考查了小数四则混合运算,灵活运用运算定律简便运算.
练习册系列答案
相关题目