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

Attempt · Explain · Animate

Grade 3 practice chapters

1. Grade 3 · Chapter 321

   Multiply complete equal groups: rows: 8; objects in each row: 8

   A rectangular arrangement for a classroom activity has 8 rows with 8 counters in each row. Find the number of objects in the original array, explain the calculation, and check a related question.

   Question · Worked solution · Animated example

   Open practice chapter

2. Grade 3 · Chapter 322

   Count groups of a chosen size: objects available: 45; objects required in each group: 2

   At a classroom activity, 45 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 323

   Count equal fractional pieces: selected pieces: 11; equal pieces in each whole: 5

   A supply strip for a classroom activity is cut into 5 equal pieces per whole, and 11 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 324

   Build area with equal square units: rows of unit squares: 10; squares in each row: 11

   A rectangular arrangement for a classroom activity has 10 rows with 11 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

5. Grade 3 · Chapter 325

   Combine hundreds and regroup the total: first three-digit amount: 428; second amount: 189

   At a classroom activity, a first group contains 428 counters and another group brings 189 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 326

   Choose the nearer hundred: original count: 147; rounding place: 10

   A report for a classroom activity contains a count of 147 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 327

   Cross an hour boundary with minutes: starting whole hour: 1; duration: 125 minutes

   An activity at a classroom activity starts at 1:00 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 328

   Read totals and differences from bars: category a: 57; category b: 31; category c: 59

   A survey display at a classroom activity records three category counts: 57 counters, 31 counters, and 59 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 329

   Multiply complete equal groups: rows: 9; objects in each row: 4

   A rectangular arrangement for a classroom activity has 9 rows with 4 counters in each row. Find the number of objects in the original array, explain the calculation, and check a related question.

   Question · Worked solution · Animated example

   Open practice chapter

10. Grade 3 · Chapter 330

    Count groups of a chosen size: objects available: 59; objects required in each group: 4

    At a classroom activity, 59 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

11. Grade 3 · Chapter 331

    Count equal fractional pieces: selected pieces: 9; equal pieces in each whole: 12

    A supply strip for a classroom activity is cut into 12 equal pieces per whole, and 9 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

12. Grade 3 · Chapter 332

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

    A rectangular arrangement for a classroom activity has 7 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

13. Grade 3 · Chapter 333

    Combine hundreds and regroup the total: first three-digit amount: 332; second amount: 120

    At a classroom activity, a first group contains 332 counters and another group brings 120 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 334

    Choose the nearer hundred: original count: 364; rounding place: 100

    A report for a classroom activity contains a count of 364 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

15. Grade 3 · Chapter 335

    Cross an hour boundary with minutes: starting whole hour: 6; duration: 55 minutes

    An activity at a classroom activity starts at 6:00 and runs for 55 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

16. Grade 3 · Chapter 336

    Read totals and differences from bars: category a: 38; category b: 13; category c: 36

    A survey display at a classroom activity records three category counts: 38 counters, 13 counters, and 36 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

17. Grade 3 · Chapter 337

    Multiply complete equal groups: rows: 10; objects in each row: 10

    A rectangular arrangement for a classroom activity has 10 rows with 10 counters in each row. Find the number of objects in the original array, explain the calculation, and check a related question.

    Question · Worked solution · Animated example

    Open practice chapter

18. Grade 3 · Chapter 338

    Count groups of a chosen size: objects available: 16; objects required in each group: 10

    At a classroom activity, 16 counters are packed in groups of exactly 10. 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

19. Grade 3 · Chapter 339

    Build area with equal square units: rows of unit squares: 4; squares in each row: 3

    A rectangular arrangement for a classroom activity has 4 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

20. Grade 3 · Chapter 340

    Separate covering from boundary distance: width: 9; height: 13

    A rectangular plan for a classroom activity measures 9 units across and 13 units high. Find the original perimeter and area, explain the calculation, and check a related question.

    Question · Worked solution · Animated example

    Open practice chapter