Antonio said, "To solve 506-288, I can think of 5 hundreds as 50 tens." How might this help him subtract?
It will only help him if the number 100 is new to him. Otherwise I would adivice him to compute 500 - 300 and then add 6 and add 12, so the answer is 218.
218
Antonio's statement can help him in subtracting 506 - 288 by understanding the concept of regrouping in subtraction. By thinking of 5 hundreds as 50 tens, Antonio can manipulate the numbers to simplify the subtraction process.
First, Antonio can break down 506 into 500 + 6, and 288 into 200 + 80 + 8. This step helps in visualizing the numbers in a way that enables easier subtraction.
Next, Antonio can start subtracting the hundreds place. Since 500 is equivalent to 50 tens, he can subtract 200 (which is equivalent to 20 tens) from 500, resulting in 300.
Moving on to the tens place, Antonio can subtract 80 (which is equivalent to 8 tens) from 50 tens. Since there are no more tens left, he can move to the ones place.
Finally, Antonio can subtract 8 ones from 6 ones, resulting in 2.
Putting everything together, the final result of 506 - 288 is 218.