Question

Estimate: 25,148 + 7394 + 9343 + 752

Answer 1

Answer:

Estimation: 42,450

Real Answer: 42,637

Step-by-step explanation:

Estimation

Step 1: 25,148 rounded to the nearest thousand is 25,000.

Step 2: 7,394 rounded to the nearest hundred is 7,400.

Step 3: 9,343 rounded to the nearest hundred is 9,300.

Step 4: 752 rounded to the nearest ten is 750.

Step 5: 25,000 + 7,400 + 9,300 + 750

Step 6: 32,400 + 9,300 + 750

Step 7: 41,700 + 750

Step 8: 42,450

Real Answer

Step 1: 25,148 + 7394 + 9343 + 752

Step 2: 32,542 + 9343 + 752

Step 3: 41,885 + 752

Step 4: 42,637

Hope this helps!

Answer 2

Concept:

When you round off a number, you preserve its value but move it closer to the next number, making it easier to understand. It's done for whole numbers as well as decimals at various places such as hundreds, tens, and tenths. To retain significant figures, numbers are rounded off.

Find:

The estimated value of the given figures.

Solution:

The rounding off of $25148=25000$.

The rounding off of $7394=7400$.

The rounding off of $9343=9300$.

The rounding off of $752=750$.

Add all the rounded-off numbers.

$=25000+7400+9300+750\\=42450$

Hence, the estimated value is $42450$.

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