Question

guy wants to add 7,145 and 8,265 and using mental math strategies what steps could guy take to add the number is guy,s answer correct explain

Answer 1

First add the biggest number like thousand together and the go in to the last numbers

Answer 2

Answer:

The sum of two numbers is 15,410.

Step-by-step explanation:

We have to add two numbers using mental math trick. The numbers to be added is 7145 and 8265.

We can use the associative property of addition to solve this problem.

Associative property of addition states that:

$a + (b+c) = (a+b) + c$

Now,

7145 + 8265

$=(7000 + 100 + 40 + 5)0 + (8000 + 200 + 60 +5)\\=(7000 + 8000) + (100 + 200) + (40 + 60) + (5+5)\\=15000 + 300 + 100 + 10\\=15410$

Thus, the sum of two numbers is 15,410.