contestada

6. Leon says he can find the sum of 30 + 67 without
rewriting it. Explain how you can solve this problem
using mental math.

Respuesta :

Answer:

You can just place the 7 instead of the 0 since if you add anything to 0 it is the number you added. then 3 and 6 make 9. so it is 97.

Step-by-step explanation:

30

+67

97

Answer:

Step-by-step explanation:

30+67=(30+70)-3=100-3=97