Respuesta :
Answer:
320
Step-by-step explanation:
When estimating, you have to round numbers to make them easier to work with.
957 becomes 960
639 becomes 640.
960 - 640 = 320
Answer:
320
Step-by-step explanation:
When estimating, you have to round numbers to make them easier to work with.
957 becomes 960
639 becomes 640.
960 - 640 = 320