scientific notation and sig figs part 1

Open Ended

Can you think of a situation in everyday life where a small measurement error could have a big impact? Explain your answer.

Multiple Choice

Why is accurate measurement important in scientific experiments?

• Because it ensures reliable and repeatable results

• Because it makes experiments faster

• Because it is required by law

• Because it uses more expensive equipment

Open Ended

Why is it important to obtain measurements in scientific experiments?

Multiple Choice

Which of the following is required to solve scientific problems?

• Understanding mathematical operations

• Memorizing scientific facts

• Ignoring numbers

• Avoiding calculations

Multiple Select

Which of the following are examples of exact numbers?

• 12 eggs in a dozen

• 5 fingers on one hand

• The length of a table

• The mass of a rock

Fill in the Blanks

A measurement is expressed by a numerical value paired together with a

.

Open Ended

Explain the difference between significant and non-significant zeros in a number.

Open Ended

Explain the difference between when zeros are considered significant and when they are not, using examples from the slides.

Multiple Choice

According to the rules shown, which of the following numbers has 3 significant figures?

• 0.005

• 4.09

• 1000

• 0.0701

Multiple Choice

Which of the following numbers has the greatest number of significant figures?

• 68.0

• 15.40

• 709

• 230.0

Fill in the Blanks

Fill in the blank: The number 1.025 has

significant figures.

Multiple Choice

When rounding 76.499 to four significant figures, what is the correct result?

• 76.49

• 76.50

• 76.5

• 76.490

Multiple Select

Select all statements that are true about significant figures in multiplication and division:

• The answer must have the same number of sig figs as the number with the least sig figs.

• You always round up to the nearest whole number.

• The answer cannot have more sig figs than the number with the least sig figs.

• You keep all decimal places in the answer.

Multiple Choice

When adding or subtracting numbers, why must the answer have the same number of decimal places as the number with the fewest decimal places?

• To ensure the answer is not more precise than the least precise measurement

• To make the calculation easier

• To avoid rounding errors

• To match the largest number's decimal places