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 ten is 550.
No because 548 rouned to the nearest ten is 550.
To determine if Fern's estimate for the subtraction 548-132 is correct, we can follow the steps she used to round and subtract.
- First, Fern rounded both numbers to the nearest ten:
- 548 rounded to the nearest ten is 550
- 132 rounded to the nearest ten is 130
- Next, Fern subtracted the rounded numbers:
- 550 - 130 = 420
Therefore, Fern's estimation is not correct. She should have gotten 420 as her estimate, not 410.