Estimate first: is this answer sensible?

Answer Key - Grade 6 Math Worksheet - Challenge Me

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

1. 1.

   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?

   6
2. 2.

   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?

   7
3. 3.

   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?

   9
4. 4.

   Jun estimates 4.8 × 6.7 as 5 × 7 = 35. Is 35 an overestimate or an underestimate?

   • Overestimate: both rounded up
   • Underestimate: both rounded up
   • Exact: no rounding happened
5. 5.

   Luz has $10 and wants 4 snacks at $2.35. Why round each price up to $2.50 to check?

   • To make the $2.35 cheaper
   • To see if $10 is enough
   • To find the exact $9.40
6. 6.

   Milo says 3.2 × 4.1 = 131.2. Agree or disagree?

   • Agree: the digits 1312 are right
   • Disagree: it is about 12
   • Agree: products grow big
7. 7.

   Noah says 0.5 × 8.4 = 42. Agree or disagree?

   • Agree: multiplying makes it bigger
   • Agree: 5 × 84 makes 420
   • Disagree: it is about 4
8. 8.

   Pia says 5/6 + 7/8 is less than 1. Agree or disagree?

   • Disagree: it is close to 2
   • Agree: the fractions are small
   • Agree: 5 + 7 over 6 + 8 is 12/14
9. 9.

   Ren's calculator shows the digits 450 for 2.5 × 1.8, but the decimal point is missing. Where does it go?

   • 0.450
   • 4.50
   • 45.0
10. 10.

    Tala gets the digits 30 for 9.6 ÷ 0.32. Which answer fits the estimate?

    • 0.3
    • 30
    • 3