先用计算器计算前3题的得数，再直接写出后面各题的得数．
6×9=
6.6×6.9=
6.66×66.9=
6.666×666.9=
6.6666×6666.9=
6.66666×66666.9=
6×9=54；
6.6×6.9=45.54；
6.66×66.9=445.554；
发现：整数部分多一个4，小数的部分多一个5．所以
6.666×666.9=4445.5554；
6.6666×6666.9=44445.55554；
6.66666×66666.9=444445.555554；
故答案为：54；45.54；445.554；4445.5554；44445.55554；444445.555554．
One day, some children were playing hide-and-seek（捉迷藏）happily. In front of the 31 , Jim found the door of the letter box was 32 and climbed in. He 33 closed the door. When he knew 34 he had locked himself in it, he began to 35 help, but nobody could 36 . He was 37 and began to cry. At that time, his sister was 38 for him. She happened to hear him. She , of course, wasn’t able to open it. When the 39 helped him out, he couldn’t keep back his tears. He had been in the box for nearly an hour. “Don’t forget 40 a stamp on yourself next time,” said the postman.
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