Approximations and Error

Round 74 815 to the nearest 10

• 75 000

• 74 800

• 74 820

• 80 000

Round off 408 961 to the nearest 100

• 409 000

• 408 000

• 408 960

• 410 000

Round 74 815 to the nearest 1000

• 75 000

• 74 800

• 74 820

• 80 000

How many significant figures does 100.00 have?

• 1

• 2

• 3

• 5

How many significant figures does 4004 have?

• 1

• 2

• 3

• 4

Round 0.010229 to four significant figures.

• 0.010229

• 0.0102

• 0.010

• 0.01023

Round 1047.78 to three significant figures.

• 1050

• 1048

• 1047.8

• 105

What is 78.5 rounded to one significant figure?

• 80

• 70

• 79

• 78.5

Estimate 5877 ÷ 32 using a one figure approximation.

• 200

• 180

• 184

• 183.7

Estimate 5.84 x 8.09 using a one figure approximation.

• 48

• 50

• 47

• 47.2