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3rd grade · Math · Unit 8 of 14

Round & Count

Round, count and compare to 1000

What your child practices

Rounding numbers to the nearest ten or hundred, counting forward and back by 50s, 100s and 200s, and comparing and ordering numbers up to 1000.

Alabama Course of Study content standard: 3.10 · rounding whole numbers to the nearest 10 or 100

How we explain it

Children can open this short lesson before they practice.

  1. To round to the nearest ten, look at the ones digit.
  2. If the ones digit is 5 or more, round up. If less than 5, round down.
  3. Skip count forward or back by 10s, 50s or 100s.

Example: Round 166 to the nearest ten. The ones digit is 6, which is 5 or more. Round up: 170. Answer: 170

Round & Count in Alabama

In the Alabama Course of Study, this is unit 8 of 14 in 3rd grade Math, after Time and before Area & Perimeter.

Gradelings describes a child's practice on this unit as Beginning, Approaching, Meeting or Exceeding (Four practice steps). That reflects practice, not a report-card mark: the teacher decides the mark.

Source: Alabama State Department of Education (ALSDE)

Sample questions

A taste of this unit. In the app, questions change every time and get easier or harder to match your child.

  1. Question 1

    Round 706 to the nearest ten.

    700701702703704705706707708709710
    • 710
    • 700
    • 706

  2. Question 2

    What number is missing?

    200, 300, , 500, 600

    • 400
    • 403
    • 397

  3. Question 3

    Tap the numbers from smallest to biggest.

    • 527
    • 933
    • 726
    • 591

  4. Question 4

    Round 818 to the nearest hundred.

    • 800
    • 820
    • 900

  5. Question 5

    Count back by 100s. What comes next?

    800, 700, 600, 500,

    • 403
    • 400
    • 395

  6. Question 6

    Round 109 to the nearest hundred.

    • 110
    • 100
    • 200

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