Question

Estimate. 5,380+17,980 explain​

Answer 1

Answer:

23400

Step-by-step explanation:

5380 + 17980

Estimating this,

5400+18000

= 23400 is the estimated value

Answer 2

Answer:

(a) 439 + 334 + 4317

Rounding off to hundreds

Rounding off 439 to the nearest hundreds= 400

Rounding off 334 to the nearest hundreds=300

Rounding off 4,317 to the nearest hundreds, we get 4,300

On adding we get,

400 + 300 + 4,300 = 5,000

Rounding off to tens

Rounding off 439 to the nearest tens = 440

Rounding off 334 to the nearest tens= 330

And, rounding off 4,317 to the nearest tens =4,320

On adding we get

440 + 330 + 4,320 = 5,090

The answer is 5,000 when we round off the given terms to the nearest hundreds.

The answer is 5,090 when we round off the given terms to the nearest tens.

(b) 1,08,734 – 47,599

Rounding off to hundreds

Rounding off 1,08,734 to the nearest hundreds= 1,08,700

And rounding off 47,599 to the nearest hundreds= 47,600

On subtracting we get

1,08,700-47,600=61,100

Rounding off to tens

Rounding off 1,08,734 to the nearest tens =1,08,730

Rounding off 47,599 to the nearest tens =47,600

On subtracting we get

1,08,730-47,600=61,130

The answer is 61,000 when we round off the given terms to the nearest hundreds.

The answer is 61,130 when we round off the given terms to the nearest tens.

(c) 8325 – 491

Rounding off to hundreds

Rounding off 8,325 to the nearest hundreds= 8,300

And, rounding off 491 to the nearest hundreds= 500

On subtracting, we get

8,300-500=7,800