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Give a rough estimate (by rounding off to nearest hundreds) and also a closer estimate (by rounding off to nearest tens): 4, 89, 348 – 48, 365
By BYJU'S Exam Prep
Updated on: September 25th, 2023
By rounding to the nearest hundreds, the value is 4, 40, 900 abd by rounding to the nearest tens, the value is 4, 40, 980.
Step 1: Let us round off to hundreds.
If 0, 1, 2, 3, or 4 are the tens digits then round to the previous hundred, and if 5, 6, 7, 8, or 9 are the tens digits then round up to the next hundred.
Rounding 4, 89, 348 to the nearest hundreds = 4, 89, 300
Rounding 48, 365 to the nearest hundreds = 48, 400
By subtraction,
4, 89, 300 – 48, 400 = 4, 40, 900
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Step 2: Let us round off to tens.
If 0, 1, 2, 3, or 4 are the one’s digits then round to the previous ten, and if 5, 6, 7, 8, or 9 are the one’s digits then round to the next ten.
Rounding 4, 39, 348 to the nearest tens = 4, 89, 350
Rounding 48, 365 to the nearest tens = 48, 370
By subtraction,
4, 89, 350 – 48, 370 = 4, 40, 980
Therefore, using rounding off to hundreds answer is 4, 40, 900, and using rounding off to tens answer is 4, 40, 980.
Summary:
Give a rough estimate (by rounding off to the nearest hundreds) and also a closer estimate (by rounding off to nearest tens): 4, 89, 348 – 48, 365
The rough estimate of 4, 89, 348 — 48, 365 (by rounding off to nearest hundreds) and also a closer estimate of 4, 89, 348 — 48, 365 (by rounding off to nearest tens) are 4, 40, 900 and 4, 40, 980.
