Question

Describe how you regroup when you find the sum of 64 + 43

Answer 1

64+ 43
= (60+4)+ (40+3)
= (60+40)+ (4+3) (combine like terms)
= 100+7
= 107

The final answer is 107~

Answer 2

All i do is i think of 4+3 which equals 7 and then 6+4 which equals 10 then i put the numbers together.

so my answer is 107

         64
         43
----------------
        107