K12worX
Back to Choose appropriate accuracy — Problem 4 · Task Set 6

Exercises: Choose a Level of Accuracy Appropriate to Limitations on Measurement When Reporting Quantities

Work through each section in order. Show your work where indicated. Remember: the goal is to report the right number of digits, not the most digits.

Grade 9·22 problems·~40 min·Common Core Math - HS Number and Quantity·standard·hsn-q-a-3
Work through problems with immediate feedback
A

Fluency Practice

1.

Apply the correct significant-figure rule for each calculation.

Multiplication: 3.2 m×4.75 m=3.2 \text{ m} \times 4.75 \text{ m} =   ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲   m² (report to correct sig figs).

Addition: 12.3 cm+0.56 cm=12.3 \text{ cm} + 0.56 \text{ cm} =   ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲   cm (report to correct sig figs).

area in m²:
sum in cm: