Question

0.2222✘0.76+0.8888✘0.06用简便方法怎么算？

Answer 1

题目:
简便计算0.2222×0.76+0.8888×0.06。
解析:
这是一道小学简便计算题，观察发现
0.8888=0.2222×4，可以利用这种关系将两个加数化统一，再进行化简求解。
解答:
0.2222×0.76+0.8888×0.06
=0.2222×0.76+0.2222×4×0.06
=0.2222×0.76+0.2222×0.24
=0.2222×（0.76+0.24）
=0.2222×1
=0.2222

方法二:
0.2222×0.76+0.8888×0.06
=0.2222×0.19×4+0.8888×0.06
=（0.2222×4）×0.19+0.8888×0.06
=0.8888×0.19+0.8888×0.06
=0.8888×（ 0.19+0.06）
=0.8888×0.25
=0.25×4×0.2222
=（0.25×4）×0.2222
=1×0.2222
=0.2222

两种方法结果一致，可见0.2222就是正确答案。另外，通过比较发现，第一种方法较为简便。