номер 2, страница 96 - гдз по английскому языку 6 класс учебник Goldstein, Jones

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2.29 Read and listen to the text. Which symbols from Exercise 1 do you use to calculate a percentage?

PERCENTAGES

+ %

The word 'per cent' comes from Roman times. It comes from the Latin words per centum or 'out of 100'. Before the Romans, the ancient Egyptians used a similar system of numbers in tens. But the numbers from 0 to 9 that we use today come from the ancient Arab world, over 2,000 years ago. The Arabs also used fractions, for example, ¹/₄. We use percentages to calculate how much a part of a whole is. And when we say 'per cent', we're really saying 'out of 100'.

50% OF THIS BOX IS BLUE (50 OUT OF 100)

25% OF THIS BOX IS PINK (25 OUT OF 100)

When we calculate a percentage of something, first we need to know the total number of things, or 'the whole'. The whole is 100%. For example, there are 12 cakes on a table. In this calculation, 12 is the whole and is 100%.

Next, we need to know the number we want to change to a percentage. For example, Tanya eats three of the cakes on the table so three is the number we want to change to a percentage.

We put these two numbers into a fraction. In our example, we need to calculate what per cent three (number of cakes Tanya ate) is of twelve (total number of cakes). The fraction is 3/12. 3 ÷ 12 = 0.25.

Finally, we multiply this number by 100 to make a percentage. 0.25 x 100 = 25.

So Tanya ate 25% of the cakes.

Find out about our number system.

1 2 3

4 5 6

7 8 9

Discovery EDUCATION

8.4 What does Zero mean?

Прочитайте и прослушайте текст. Какие символы из Упражнения 1 вы используете для вычисления процента?

Ответ:

According to the text, to calculate a percentage, you use the division sign (÷) and the multiplication sign (x). The percentage sign (%) is used to show the final result.

Согласно тексту, для вычисления процента вы используете знак деления (÷) и знак умножения (x). Знак процента (%) используется для обозначения конечного результата.