Estimation and Approximation

The estimated value of of 6.4 multiplied by 7.9 is

• 46

• 47

• 48

• 49

Which of the following numbers does NOT round to 400 when rounding to the nearest 100?

• 467

• 371

• 448

• 385

The round off value of 78.25m to the nearest 10m is

• 90

• 78

• 80

• 75

The round off value of 38.23 to the nearest whole number is

• 35

• 40

• 39

• 38

Estimating is to....

• find the exact answer

• find something close to the correct answer

• use an algorithm

Estimate my change.... I buy a $28.75 basketball, I give a $50 note , my change will be about?

• $78.75

• $25

• $20

• $30

Approximate... I ran 393m to my Grandpa's house, If i run back the total distance ran will be?

• 800m

• 600m

• 39.3m

• 750m

What is 45 453 rounded off to the nearest 10 ?

• 45 450

• 45 500

• 45 460

• 46 000

What is 2.37 corrected to 1 decimal place ?

• 2

• 2.4

• 2.3

• 3

What is 12.692 rounded off to the nearest whole number ?

• 12.690

• 13.7

• 12

• 13