Question

выполните деиствие: 1) -0,75 + 0,55; 4) 10,89 + (-0,9); 2) -3,19 +5,49; 5) -8,6 + 7,62; 3) 7,68 + (-0,98); 6) 3,64+ (-1,46).​

Answer 1

Ответ:

- 0,75 + 0,55 = - ( 0,75 - 0,55 ) = 0,2

2) - 3,19 + 5,49 = 5,49 - 3,19 = 2,3

3) 7,68 + ( - 0,98 ) = 7,68 - 0,98 = 6,7

4) 10,89 + ( - 0,9 ) = 10,89 - 0,9 = 9,99

5) - 8,6 + 7,62 = - ( 8,6 - 7,62 ) = - 0,98

6) 3,64 + ( - 1,46 ) = 3,64 - 1,46 = 2,18

Answer 2

To solve the given expressions, we can simply perform the addition operation between the numbers provided. Let's solve each expression one by one:

1) -0.75 + 0.55 The sum of these numbers is: -0.75 + 0.55 = -0.2

2) 10.89 + (-0.9) The sum of these numbers is: 10.89 + (-0.9) = 9.99

3) -3.19 + 5.49 The sum of these numbers is: -3.19 + 5.49 = 2.3

4) -8.6 + 7.62 The sum of these numbers is: -8.6 + 7.62 = -0.98

5) 7.68 + (-0.98) The sum of these numbers is: 7.68 + (-0.98) = 6.7

6) 3.64 + (-1.46) The sum of these numbers is: 3.64 + (-1.46) = 2.18

So, the solutions to the given expressions are: 1) -0.2 2) 9.99 3) 2.3 4) -0.98 5) 6.7 6) 2.18