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Look at the numbers on the blackboard.
看黑板上的数字
五十 六十
九十 谁能猜出丢失的数字是多少
It's easy. Fifty plus ten is sixty.
很简单 五十加上十是六十
So the missing numbers are seventy and eighty.
所以丢失的数字就是七十 八十
Look at the numbers on the blackboard.
看黑板上的数字
五十 六十
九十 谁能猜出丢失的数字是多少
It's easy. Fifty plus ten is sixty.
很简单 五十加上十是六十
So the missing numbers are seventy and eighty.
所以丢失的数字就是七十 八十
One hundred minus ten is ninety.
一百减去十等于九十
Ninety minus ten is eighty.
九十减去十等于八十
So the missing numbers are eighty and seventy.
所以丢失的数字就是八十和七十
Well done!
很不错
One hundred minus ten is ninety.
一百减去十等于九十
Ninety minus ten is eighty.
九十减去十等于八十
So the missing numbers are eighty and seventy.
所以丢失的数字就是八十和七十
Well done!
很不错
