Question

В одной коробке 9 карандашей. Сколько карандашей останется в 5 таких же коробках, если из каждой взять по 2 карандаша? Запиши двумя способами?

Answer 1

Первый способ: 1) 9-2=7 карандашей в одной коробке 2) 7*5=35 карандашей в 5 коробках Второй способ: 1) 9*5=45 карандашей в 5 коробках 2) 2*5 =10 карандашей забрали из 5 коробок 3) 45-10=35 карандашей осталось

Answer 2

Problem Analysis

We are given a box containing 9 pencils. We need to find out how many pencils will remain if we take 2 pencils from each of the 5 identical boxes.

Solution

To find the number of pencils remaining, we need to subtract the number of pencils taken from the total number of pencils.

Let's calculate the number of pencils remaining using two different methods.

Method 1: Subtraction

1. Start with the total number of pencils in the first box, which is 9. 2. Subtract the number of pencils taken from the first box, which is 2. 3. The number of pencils remaining in the first box is 9 - 2 = 7. 4. Since we have 5 identical boxes, multiply the number of pencils remaining in the first box by 5. 5. The total number of pencils remaining in 5 boxes is 7 * 5 = 35.

Therefore, there will be 35 pencils remaining in the 5 boxes if we take 2 pencils from each box.

Method 2: Multiplication

1. Start with the total number of pencils in the first box, which is 9. 2. Multiply the number of pencils in the first box by the number of boxes, which is 5. 3. The total number of pencils in 5 boxes is 9 * 5 = 45. 4. Subtract the number of pencils taken from the total number of pencils, which is 2 * 5 = 10. 5. The number of pencils remaining is 45 - 10 = 35.

Therefore, there will be 35 pencils remaining in the 5 boxes if we take 2 pencils from each box.

Summary

If we take 2 pencils from each of the 5 identical boxes, there will be 35 pencils remaining in the 5 boxes. This can be calculated using either subtraction or multiplication.