10,000 ways to practice.
One idea at a time.

Attempt · Explain · Animate

Grade 3 practice chapters

1. Grade 3 · Chapter 721

   Read totals and differences from bars: category a: 45; category b: 55; category c: 6

   A survey display at a classroom activity records three category counts: 45 counters, 55 counters, and 6 counters. Find the total count and the largest and smallest category counts, explain the calculation, and check a related question.

   Question · Worked solution · Animated example

   Open practice chapter

2. Grade 3 · Chapter 722

   Count groups of a chosen size: objects available: 80; objects required in each group: 2

   At a classroom activity, 80 counters are packed in groups of exactly 2. Find the number of complete groups and the remainder, explain the calculation, and check a related question.

   Question · Worked solution · Animated example

   Open practice chapter

3. Grade 3 · Chapter 723

   Count equal fractional pieces: selected pieces: 1; equal pieces in each whole: 11

   A supply strip for a classroom activity is cut into 11 equal pieces per whole, and 1 pieces are selected. Find the original selected amount as an exact fraction, explain the calculation, and check a related question.

   Question · Worked solution · Animated example

   Open practice chapter

4. Grade 3 · Chapter 724

   Separate covering from boundary distance: width: 3; height: 6

   A rectangular plan for a classroom activity measures 3 units across and 6 units high. Find the original perimeter and area, explain the calculation, and check a related question.

   Question · Worked solution · Animated example

   Open practice chapter

5. Grade 3 · Chapter 725

   Combine hundreds and regroup the total: first three-digit amount: 247; second amount: 145

   At a classroom activity, a first group contains 247 counters and another group brings 145 counters. Find the total after both groups join, explain the calculation, and check a related question.

   Question · Worked solution · Animated example

   Open practice chapter

6. Grade 3 · Chapter 726

   Choose the nearer hundred: original count: 816; rounding place: 10

   A report for a classroom activity contains a count of 816 and asks for rounding to the nearest 10. Find the rounded report using the stated place and upward midpoint rule, explain the calculation, and check a related question.

   Question · Worked solution · Animated example

   Open practice chapter

7. Grade 3 · Chapter 727

   Cross an hour boundary with minutes: starting whole hour: 2; duration: 125 minutes

   An activity at a classroom activity starts at 2:00 and runs for 125 minutes. Find the clock reading at the planned end, explain the calculation, and check a related question.

   Question · Worked solution · Animated example

   Open practice chapter

8. Grade 3 · Chapter 728

   Read totals and differences from bars: category a: 26; category b: 37; category c: 44

   A survey display at a classroom activity records three category counts: 26 counters, 37 counters, and 44 counters. Find the total count and the largest and smallest category counts, explain the calculation, and check a related question.

   Question · Worked solution · Animated example

   Open practice chapter

9. Grade 3 · Chapter 729

   Count groups of a chosen size: objects available: 37; objects required in each group: 8

   At a classroom activity, 37 counters are packed in groups of exactly 8. Find the number of complete groups and the remainder, explain the calculation, and check a related question.

   Question · Worked solution · Animated example

   Open practice chapter

10. Grade 3 · Chapter 730

    Count equal fractional pieces: selected pieces: 12; equal pieces in each whole: 6

    A supply strip for a classroom activity is cut into 6 equal pieces per whole, and 12 pieces are selected. Find the original selected amount as an exact fraction, explain the calculation, and check a related question.

    Question · Worked solution · Animated example

    Open practice chapter

11. Grade 3 · Chapter 731

    Build area with equal square units: rows of unit squares: 8; squares in each row: 7

    A rectangular arrangement for a classroom activity has 8 rows with 7 unit squares in each row. Find the area of the original rectangle in square units, explain the calculation, and check a related question.

    Question · Worked solution · Animated example

    Open practice chapter

12. Grade 3 · Chapter 732

    Separate covering from boundary distance: width: 7; height: 15

    A rectangular plan for a classroom activity measures 7 units across and 15 units high. Find the original perimeter and area, explain the calculation, and check a related question.

    Question · Worked solution · Animated example

    Open practice chapter

13. Grade 3 · Chapter 733

    Combine hundreds and regroup the total: first three-digit amount: 151; second amount: 76

    At a classroom activity, a first group contains 151 counters and another group brings 76 counters. Find the total after both groups join, explain the calculation, and check a related question.

    Question · Worked solution · Animated example

    Open practice chapter

14. Grade 3 · Chapter 734

    Choose the nearer hundred: original count: 133; rounding place: 10

    A report for a classroom activity contains a count of 133 and asks for rounding to the nearest 10. Find the rounded report using the stated place and upward midpoint rule, explain the calculation, and check a related question.

    Question · Worked solution · Animated example

    Open practice chapter

15. Grade 3 · Chapter 735

    Read totals and differences from bars: category a: 7; category b: 19; category c: 21

    A survey display at a classroom activity records three category counts: 7 counters, 19 counters, and 21 counters. Find the total count and the largest and smallest category counts, explain the calculation, and check a related question.

    Question · Worked solution · Animated example

    Open practice chapter

16. Grade 3 · Chapter 736

    Count groups of a chosen size: objects available: 94; objects required in each group: 4

    At a classroom activity, 94 counters are packed in groups of exactly 4. Find the number of complete groups and the remainder, explain the calculation, and check a related question.

    Question · Worked solution · Animated example

    Open practice chapter

17. Grade 3 · Chapter 737

    Count equal fractional pieces: selected pieces: 10; equal pieces in each whole: 2

    A supply strip for a classroom activity is cut into 2 equal pieces per whole, and 10 pieces are selected. Find the original selected amount as an exact fraction, explain the calculation, and check a related question.

    Question · Worked solution · Animated example

    Open practice chapter

18. Grade 3 · Chapter 738

    Build area with equal square units: rows of unit squares: 5; squares in each row: 3

    A rectangular arrangement for a classroom activity has 5 rows with 3 unit squares in each row. Find the area of the original rectangle in square units, explain the calculation, and check a related question.

    Question · Worked solution · Animated example

    Open practice chapter

19. Grade 3 · Chapter 739

    Combine hundreds and regroup the total: first three-digit amount: 756; second amount: 187

    At a classroom activity, a first group contains 756 counters and another group brings 187 counters. Find the total after both groups join, explain the calculation, and check a related question.

    Question · Worked solution · Animated example

    Open practice chapter

20. Grade 3 · Chapter 740

    Choose the nearer hundred: original count: 350; rounding place: 100

    A report for a classroom activity contains a count of 350 and asks for rounding to the nearest 100. Find the rounded report using the stated place and upward midpoint rule, explain the calculation, and check a related question.

    Question · Worked solution · Animated example

    Open practice chapter