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example 6. Round 550 to the nearest 100.

Solution.
500 510 520 530 540 550 560 570 580 590 600

550 is exactly between 500 and 600.
So, 550 rounds to 600.

If a number is exactly between the two hundreds, it is always rounded to the higher
hundreds.

Exercise 1E

1. round the following numbers to the nearest 10.

a. 48 b. 209 c. 742 d. 559
e. 1,075 f. 2,365 g. 5,745 h. 9,049

i. 10,204 j. 14,563

2. round the following numbers to the nearest 100.

a. 345 b. 597 c. 2,830 d. 4,576

e. 5,007 f. 2,463 g. 9,398 h. 7,518

i. 14,657 j. 43,629
3. round the following numbers to the nearest 10 and 100.

Numbers Nearest 10 Nearest 100

a. 346

b. 567

c. 238

d. 1,356

e. 2,406

4. read the following facts and round off the numbers to the nearest 10 and 100.

a. The height of Mount Everest is 8,848 m. _______________

b. The length of the river Ganges is 2,525 km. _______________
c. The diameter of the Earth is 12,742 km. _______________

d. The International Space Station is at an altitude of 425 km. _______________

20 Mathematics 4