F1 Chapter 11.2 Estimation Strategies

F1 Chapter 11.2 Estimation Strategies

Rounding Off, Rounding Up, Rounding Down

Ready for the quiz?

Rounding Off

Multiple Choice

Round off 10 835 to the nearest ten.

• 10 830

• 10 840

• 11 000

• 10 800

Multiple Choice

Round off 10 835 to the nearest hundred.

• 10 830

• 10 900

• 11 000

• 10 800

Multiple Choice

Round off 10 835 to the nearest thousand.

• 10 000

• 10 830

• 11 000

• 10 800

Multiple Choice

Round off 2.468 5 to 1 decimal place.

• 2

• 2.47

• 2.4

• 2.5

Multiple Choice

Round off 2.468 5 to 2 decimal places.

• 2.467

• 2.47

• 2.46

• 2.5

Multiple Select

Choose all integers.

• 1

• 0.5

• 1.33

• 90

• 1/2

Multiple Choice

Round off 2.468 5 to the nearest integer.

• 2

• 3

• 20

• 2.5

Let's learn about rounding UP/Down

Rounding UP

• By rounding up a number to a certain place, we may obtain an approximate value not smaller than the given number. 

• Example 1: Round 12.5 up to the nearest integer is 13

• Example 2: Round 12.4 up to the nearest integer is also 13.

Ready for the quiz?

Rounding Up

Multiple Choice

Round up 5 846 to the nearest thousand.

• 5 000

• 6 000

• 5 800

• 5 900

Multiple Choice

Round up 2.152 to the nearest integer.

• 2

• 3

• 2.1

• 2.2

Multiple Choice

Round up 6.7253 to 3 decimal places.

• 6.73

• 6.726

• 6.725

• 6.72

Rounding DOWN

• By rounding down a number to a certain place, we may obtain an approximate value not larger than the given number. 

• Example 1: Round 12.4 down to the nearest integer is 12

• Example 2: Round 12.5 down to the nearest integer is also 12.

Ready for the quiz?

Rounding Down

Multiple Choice

Round down 3 874 to the nearest thousand.

• 3 000

• 4 000

• 3 870

• 3 800

Multiple Choice

Round down 21.96 to the nearest integer.

• 21

• 22

• 21.9

• 22.0

Multiple Choice

Round down 4.507 to 1 decimal place.

• 4.5

• 4.4

• 4.6

• 4.51

Final Check

Rounding Off, Rounding Up and Rounding Down

You are done!