Answer:
Step-by-step explanation:
Break Apart to make tens is a strategy to help children to add numbers in a easier way. This is applied when they have to sum 2-digits number, which is new for them.
So, first we could think about how many units in 62 are left to each 70, we'll find that 8 units are left to reach 70. So, this 8 will help to break the simplest part, which is 9, we can rewrite 9 as the sum of 8+1.
Then, the next step is add 62+8, because kids know that makes a ten, 62+8=70, now we have a ten formed. Lastly, we just add the second number missing, which is 1. 70+1=71.
You see, this strategy consist in making tens to help children to sum, because they are familiarize with sum based on tens.
