Mastering Rounding Techniques

What is rounding to significant figures?

• Rounding to significant figures is the process of converting a number to its nearest whole number.

• Rounding to significant figures involves changing a number to its largest digit only.

• Rounding to significant figures is the process of adjusting a number to retain a specified number of meaningful digits.

• Rounding to significant figures means eliminating all digits after the decimal point.

How do you round the number 0.00456 to two significant figures?

• 0.0045

• 0.005

• 0.00456

• 0.0046

Round the number 123.456 to one decimal point.

• 123.6

• 124.0

• 123.4

• 123.5

What is the result of rounding 78.9 to the nearest whole number?

• 80

• 78

• 75

• 79

If you round 0.000345 to three significant figures, what do you get?

• 0.0003

• 0.00035

• 0.0004

• 0.000345

How many significant figures are in the number 1002?

• 2

• 5

• 3

• 4

Round 5.678 to two decimal points.

• 6.00

• 5.68

• 5.67

• 5.70

What is the rule for rounding numbers that are exactly halfway?

• Always round down to the nearest integer.

• Round to the nearest odd number.

• Round to the nearest even number.

• Round up to the next whole number.

If a number has trailing zeros after a decimal point, do they count as significant figures?

• No, they do not count as significant figures.

• Only the first zero counts as a significant figure.

• Yes, they count as significant figures.

• Trailing zeros are only significant if they are before the decimal point.

Round the number 0.009876 to two significant figures.

• 0.0099

• 0.01

• 0.009

• 0.0098