Question

Б) 7 3/4 - 2,25 г) 4,8:4 е) 12:0,3 заранее спасибо!)

Answer 1

Ответ:

Пошаговое объяснение:

б) 7 3/4 - 2,25 = 7,75 - 2,25 = 5,5

г) 4,8:4 = 1,2

е) 12:0,3 = 120/3 = 40

Answer 2

Б) To subtract mixed numbers, we need to convert them into improper fractions and then subtract them. Let's do that:

7 3/4 = (7 * 4 + 3) / 4 = 31/4

Now subtract 2 1/4 from 31/4:

31/4 - 9/4 = (31 - 9) / 4 = 22/4 = 11/2

So, 7 3/4 - 2 1/4 = 11/2.

г) To divide decimals, we divide the numbers as whole numbers and then adjust the decimal point. Let's do that:

4.8 ÷ 4 = 1.2

So, 4.8 divided by 4 is equal to 1.2.

е) To divide a whole number by a decimal, we can convert the decimal into a fraction and then multiply the whole number by the reciprocal of the fraction. Let's do that:

12 ÷ 0.3 = 12 * (1/0.3) = 12 * (10/3) = 120/3 = 40

So, 12 divided by 0.3 is equal to 40.

Therefore, the results are:

Б) 7 3/4 - 2 1/4 = 11/2 г) 4.8 ÷ 4 = 1.2 е) 12 ÷ 0.3 = 40