Question

Which of the following rounding off is correct? * (a) 841 ~ 800 (b) 286 ~ 200 (c) 9870 ~ 9800 (d) 87 ~ 80

Answer 1

Answer:

(a) 841 ~ 800

Step-by-step explanation:

in (a) 841 ~ 800,

it is rounded by 100

and 41<50

so the rounded value of 841 is 800.

Answer 2

To Find :- Which of the following rounding off is correct ?

(a) 841 ~ 800

(b) 286 ~ 200

(c) 9870 ~ 9800

(d) 87 ~ 80

Concept used :- When rounding to the nearest hundred or nearest tens , look at the right side digit of the number.

• If that digit is 0, 1, 2, 3, or 4, you will round down to the previous hundred or previous ten . { The hundreds digit or tens digit does not change.}
• If that digit is 5, 6, 7, 8, or 9, you will round up to the next hundred or next ten . { The hundreds digit or tens digit increases by one.}
• All rest digits changes into 0.

Solution :-

Using above told concept checking all given options now :-

(a) 841 ~ 800

rounding off to nearest hundred

→ Tens digit = 4

So, hundred digit remains same and rest digits changes into zero .

then,

→ 841 ~ 800

therefore option (A) is correct .

(b) 286 ~ 200

rounding off to nearest hundred

→ Tens digit = 8

So, round up to the next hundred, hundreds digit increased by 1 and rest becomes zero .

then,

→ 286 ~ 300

therefore option (B) is incorrect .

(c) 9870 ~ 9800

rounding off to nearest hundred

→ Tens digit = 7

So, round up to the next hundred, hundreds digit increased by 1 and rest becomes zero .

then,

→ 9870 ~ 9900

therefore option (C) is incorrect .

(d) 87 ~ 80

rounding off to nearest ten

→ Unit digit = 7

So, round up to the next ten, tens digit increased by 1 and rest becomes zero .

then,

→ 87 ~ 90

therefore option (D) is incorrect .

Hence, Option (A) 841 ~ 800 is correct answer .

Learn more :-

find the expanded form of 253.147

https://brainly.in/question/29654250

(3) निम्न के स्थानीय मान लिखिये-

(अ)43.24

(स)884.20

(ब) 534.34

(द) 178.34

https://brainly.in/question/37666224