number sense Fern rounded to the nearest ten to estimate 548-132
she subtracted 540-130 and got 410
Is Fern's estimate correct?
Explain
No.
548 rounded to the nearest 10 is 550.
no because 548 rounded to the nearest 10 is 550, this 550-130 is 420
No because 548 rounded to the merest ten is 550, this 550 - 130 420.
Estimate 23.94
What is 548 rounded to the nearest 10
To determine if Fern's estimate is correct, we need to find the actual difference between 548 and 132.
To do this, we subtract 132 from 548:
548 - 132 = 416
Now let's compare Fern's estimate (410) to the actual difference (416).
Fern's estimate is slightly lower than the actual difference.
This slight difference can be attributed to the method Fern used to estimate. When rounding to the nearest ten, Fern rounded 548 down to 540 and rounded 132 down to 130. This resulted in a smaller estimate.
Therefore, Fern's estimate of 410 is not exactly correct, but it is close.