Grade 6 · Math

6th grade Estimate first: is this answer sensible? 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

Estimate first: is this answer sensible?

Grade 6 Math Worksheet - Challenge Me

NameDate

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

Ari's class collects 35.6 kg of paper for recycling in 5.8 weeks. Rounding each to the nearest whole, about what is 35.6 ÷ 5.8?
Bo's bike trip of 27.6 km takes 3.7 hours, snack stops included. Rounding each to the nearest whole, about what is 27.6 ÷ 3.7?
Esme has 44.8 m of fabric and cuts pieces 4.6 m long for costumes. Rounding each to the nearest whole, about what is 44.8 ÷ 4.6?
4.
Jun estimates 4.8 × 6.7 as 5 × 7 = 35. Is 35 an overestimate or an underestimate?
- Overestimate: both rounded up
- Exact: no rounding happened
- Underestimate: both rounded up
5.
Kira estimates 3.2 + 5.1 as 3 + 5 = 8. Is 8 an overestimate or an underestimate?
- Exact: the sum is 8
- Overestimate: both rounded down
- Underestimate: both rounded down
6.
Milo says 3.2 × 4.1 = 131.2. Agree or disagree?
- Disagree: it is about 12
- Agree: the digits 1312 are right
- Agree: products grow big
7.
Pia says 5/6 + 7/8 is less than 1. Agree or disagree?
- Disagree: it is close to 2
- Agree: 5 + 7 over 6 + 8 is 12/14
- Agree: the fractions are small
8.
Ren's calculator shows the digits 450 for 2.5 × 1.8, but the decimal point is missing. Where does it go?
- 4.50
- 45.0
- 0.450
9.
Tala gets the digits 30 for 9.6 ÷ 0.32. Which answer fits the estimate?
- 30
- 0.3
- 3
10.
Zee's answer for 6.25 × 3.9 has the digits 24375. Which fits the estimate?
- 2.4375
- 24.375
- 243.75

Estimate first: is this answer sensible?. Every version has 10 questions, and the answer key prints on the second page.

I can round decimals to the nearest whole by reading the tenths digit.
I can use 0, 1/2 and 1 to estimate fraction and mixed-number sums and differences.
I can estimate products and quotients and pick the sensible answer in a story.
I can say whether an estimate is over or under, and use an estimate to place a decimal point.

Standard: IXL parity (Nov 11) (supports 6.NS.B.3)

estimate: A close answer worked out with friendly numbers

round: Change a number to a nearby friendly one

benchmark: A friendly fraction like 0, 1/2 or 1

overestimate: An estimate bigger than the exact answer

underestimate: An estimate smaller than the exact answer

Your child dropped the decimals instead of rounding. Look at the tenths digit: 5 or more rounds up, so 4.8 becomes 5, not 4.

Your child accepted an answer with the decimal point in the wrong place. Estimate first: 3.2 × 4.1 is about 3 × 4 = 12, so 131.2 can't be right.

What is the most common mistake with estimate first: is this answer sensible??

Your child dropped the decimals instead of rounding. Look at the tenths digit: 5 or more rounds up, so 4.8 becomes 5, not 4.

Are these 6th 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