Підготовка до ЗНО.

 Сhoose the correct answer.

For thousands of years zero didn't ....

People didn't see the .... of inventing a number that represented nothing.

Zero first appeared in the second century BC in Babylon but wasn't ... a number yet. It only helped to designate the absence of a unit in a given rank:in 101, the zero represented the absence of a unit of ten.

Three minus three .... zero.

Seems obvious, right? Yet it was by doing this problem that Brahmagupta, an Indian mathematician in the sixth century AD ... zero into a fully-fledged number. The number zero appeared in the Arab world in the eighth century, after being introduced yo the court of Caliph Al-Mansur of Baghdad by an Indian astronomer.

It only began ... through Europe in the twelfth century , and even then people were reluctant to use the number because they saw it as a symbol of nothing.

Yet zero was far ... nonexistent or harmful.

Its introduction in calculations ... to tremendous progress in algebra.