Grade 6 · Math

6th grade Estimate first: is this answer sensible? worksheet

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Estimate first: is this answer sensible?

Grade 6 Math Worksheet

NameDate

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

Ari's garden bed is 4.9 m long and 6.1 m wide. Rounding each to the nearest whole, about what is 4.9 × 6.1?
Esme rides a bike 2.9 km each day for 9.7 days (the bell gets a workout). Rounding each to the nearest whole, about what is 2.9 × 9.7?
3.
Kira estimates 5/6 + 4/9. Which estimate is best?
- About 1/2
- About 9/15
- About 1 1/2
4.
Luz has 3 1/2 m of ribbon and uses 1 4/5 m. About how much is left?
- About 5 m
- About 1 1/2 m
- About 2 1/2 m
5.
Milo buys 3 notebooks at $1.95 each. About how much is that?
- About $6
- About $20
- About $3
6.
Noah walks a 4.75-mile loop twice. About how far is that?
- About 7 miles
- About 5 miles
- About 10 miles
7.
A muffin recipe uses 2 3/4 cups of flour. Pia makes 3 batches. About how many cups is that?
- About 6 cups
- About 3 cups
- About 9 cups
8.
Ren shares 48.2 m of string among 6 kites. About how much string does each kite get?
- About 80 m
- About 8 m
- About 42 m
9.
Tala splits 7.9 liters of water into 2 jugs. About how much goes in each?
- About 16 liters
- About 4 liters
- About 10 liters
10.
Zee shares 0.6 kg of trail mix among 3 friends. About how much does each get?
- About 0.2 kg
- About 2 kg
- About 1.8 kg

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.

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