Question

N3 Сравни (98+102)*10_98*10+102*10 (100-98)*10_100*10-98*10 N6(б) В баке 200 л воды ,а в бочонке на 120 л меньше.Сколько водыв пяти такизх бочонках?

Answer 1

#6
200-120=80 л (1 бочонок)
80×5=400 л (5 бочонков)

Answer 2

Problem Analysis

To solve this problem, we need to compare two expressions and calculate the amount of water in five barrels. Let's break down the problem step by step.

Expression Comparison

The given expression is: (98 + 102) * 10 - 98 * 10 + 102 * 10 + (100 - 98) * 10 - 100 * 10 - 98 * 10

To simplify this expression, we can perform the arithmetic operations according to the order of operations (PEMDAS/BODMAS).

Simplifying the Expression

Let's simplify the given expression step by step:

1. (98 + 102) * 10 = 200 * 10 = 2000 2. 98 * 10 = 980 3. 102 * 10 = 1020 4. (100 - 98) * 10 = 2 * 10 = 20 5. 100 * 10 = 1000 6. 98 * 10 = 980

Now, let's substitute these values back into the original expression:

2000 - 980 + 1020 + 20 - 1000 - 980

Simplifying further:

1. 2000 - 980 = 1020 2. 1020 + 1020 = 2040 3. 2040 + 20 = 2060 4. 2060 - 1000 = 1060 5. 1060 - 980 = 80

Therefore, the value of the given expression is 80.

Calculating the Amount of Water in Five Barrels

According to the problem statement, there is 200 liters of water in the tank and 120 liters less in each barrel.

To calculate the amount of water in five barrels, we need to subtract 120 liters from the initial amount of water in the tank for each barrel.

Let's calculate the amount of water in five barrels:

1. Initial amount of water in the tank: 200 liters 2. Amount of water in each barrel: 200 - 120 = 80 liters

Therefore, there are 80 liters of water in each of the five barrels.

I hope this helps! Let me know if you have any further questions.