Question

Не выполняя вычислений, сравните) 1)сумму чисел -6,78 и -9,24 и их разность 2)сумму чисел -25 и 43 и сумму чисел -95 и 88. Ответ обоснуйте

Answer 1

1)-16,02 сумма и 2,46 разность   2)сумма 18 а разность -7

Answer 2

Comparing Sums and Differences of Numbers

1) Sum and Difference of -6.78 and -9.24: - The sum of -6.78 and -9.24 is -16.02. - The difference between -6.78 and -9.24 is 2.46.

Explanation: - The sum of two negative numbers is found by adding their absolute values and then attaching a negative sign to the result. Therefore, the sum of -6.78 and -9.24 is -16.02. - The difference between two numbers is found by subtracting the second number from the first. Therefore, the difference between -6.78 and -9.24 is 2.46.

2) Comparing Sums of -25 and 43, and -95 and 88: - The sum of -25 and 43 is 18. - The sum of -95 and 88 is -7.

Explanation: - The sum of two numbers with different signs is found by subtracting the absolute value of the smaller number from the absolute value of the larger number and attaching the sign of the number with the larger absolute value to the result. Therefore, the sum of -25 and 43 is 18. - Similarly, the sum of -95 and 88 is found by subtracting the absolute value of the smaller number from the absolute value of the larger number and attaching the sign of the number with the larger absolute value to the result. Therefore, the sum of -95 and 88 is -7.

In summary, the sum of -6.78 and -9.24 is -16.02, and their difference is 2.46. The sum of -25 and 43 is 18, and the sum of -95 and 88 is -7.