Grade 9 · Math · Algebra 1

9th grade Precision and greatest possible error in a measurement worksheet

6 printable versionsChallenge Me10 questions · answer keyFree · no account

Level: Building Confidence · On Level · Challenge Me

When it’s done, scan the sheet with your phone and PencilGo marks it and picks the next one. Create a free account

Version

Precision and greatest possible error in a measurement

Grade 9 Math Worksheet - Challenge Me

NameDate

Circle the best answer, or write your answer on the line.

Kira measures a book cover as 24 cm by 18 cm, each to the nearest cm. What are the smallest and largest its area could be, in square cm, smallest first?
Luz measures a magnet as 6 cm by 4 cm, each to the nearest cm. What are the smallest and largest its area could be, in square cm, smallest first?
Milo measures a sheet of paper as 30 cm by 21 cm, each to the nearest cm. What are the smallest and largest its area could be, in square cm, smallest first?
Pia measures a toy block and gets an edge of 3 cm, to the nearest cm. What is the largest its volume could be, in cubic cm?
Ren measures a small box and gets an edge of 4 cm, to the nearest cm. What is the largest its volume could be, in cubic cm?
Tala measures a game cube and gets an edge of 5 cm, to the nearest cm. What is the largest its volume could be, in cubic cm?
Zee measures a sponge cube and gets an edge of 6 cm, to the nearest cm. What is the largest its volume could be, in cubic cm?
Ari measures a scarf with a ruler as 40 cm, to the nearest cm. What percent of 40 cm is the greatest possible error?
Bo measures a kite with a ruler as 50 cm, to the nearest cm. What percent of 50 cm is the greatest possible error?
Jun measures a pencil with a ruler as 20 cm, to the nearest cm. What percent of 20 cm is the greatest possible error?

Precision and greatest possible error. Every version has 10 questions, and the answer key prints on the second page.

I can read the smallest mark from a measurement like 3.40 m and give the greatest possible error (half of it).
I can give the smallest and largest amount a measurement could be, and the largest area or volume.
I can say which of two measurements is more precise.

Standard: N-Q.A.3

precision: How small the smallest mark of the measuring tool is.

smallest mark: The smallest unit the tool shows, like 0.1 cm.

greatest possible error: Half of the smallest mark.

to the nearest: The measurement is rounded to the smallest mark.

bounds: The smallest and largest amounts a measurement could be.

Your child named the whole-number part as the smallest mark.

Your child ignored a zero at the end of a measurement.

Your child used the whole smallest mark as the error.

Ask: what do the digits after the point tell you?

Ask: does 3.40 m tell you more than 3.4 m?

Ask: is the error half of the smallest mark or all of it?

What is the most common mistake with precision and greatest possible error in a measurement?

Your child named the whole-number part as the smallest mark.

How can I help my child with precision and greatest possible error in a measurement?

Ask: what do the digits after the point tell you?

Are these 9th grade math worksheets free to print?

Yes. All 6 printable versions at each level are free to print, with the answer key, and no account is needed.

Every sheet you scan goes into your child’s record: dated, marked and ready for the year-end portfolio. Homeschool records