Question

Решить задачу разными арифметическими способами: В новом микрорайоне начали заселять 2 дома:5-ти этажный и 9-ти этажный.В общей сложности заселили 7 этажей.Сколько этажей осталось заселить?

Answer 1

1 способ

(5+9)/2=7 этажей

2 способ

9-7+5=7 этажей

Answer 2

Problem Analysis

We have two buildings, a 5-story building and a 9-story building, and a total of 7 floors have been occupied. We need to find out how many floors are left to be occupied.

Solution

To find the number of floors left to be occupied, we can subtract the number of occupied floors from the total number of floors in both buildings.

Let's calculate it step by step:

1. Calculate the total number of floors in both buildings: - The 5-story building has 5 floors. - The 9-story building has 9 floors. - The total number of floors in both buildings is 5 + 9 = 14 floors.

2. Subtract the number of occupied floors from the total number of floors: - The number of occupied floors is 7. - The number of floors left to be occupied is 14 - 7 = 7 floors.

Therefore, there are 7 floors left to be occupied.

Answer

There are 7 floors left to be occupied in the new microdistrict.