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Grade 3 practice chapters

1. Grade 3 · Chapter 481

   Build area with equal square units: rows of unit squares: 7; squares in each row: 5

   A rectangular arrangement for a classroom activity has 7 rows with 5 unit squares in each row. Find the area of the original rectangle in square units, explain the calculation, and check a related question.

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2. Grade 3 · Chapter 482

   Separate covering from boundary distance: width: 10; height: 9

   A rectangular plan for a classroom activity measures 10 units across and 9 units high. Find the original perimeter and area, explain the calculation, and check a related question.

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3. Grade 3 · Chapter 483

   Combine hundreds and regroup the total: first three-digit amount: 515; second amount: 185

   At a classroom activity, a first group contains 515 counters and another group brings 185 counters. Find the total after both groups join, explain the calculation, and check a related question.

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4. Grade 3 · Chapter 484

   Choose the nearer hundred: original count: 421; rounding place: 100

   A report for a classroom activity contains a count of 421 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.

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5. Grade 3 · Chapter 485

   Cross an hour boundary with minutes: starting whole hour: 10; duration: 135 minutes

   An activity at a classroom activity starts at 10:00 and runs for 135 minutes. Find the clock reading at the planned end, explain the calculation, and check a related question.

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6. Grade 3 · Chapter 486

   Read totals and differences from bars: category a: 24; category b: 13; category c: 58

   A survey display at a classroom activity records three category counts: 24 counters, 13 counters, and 58 counters. Find the total count and the largest and smallest category counts, explain the calculation, and check a related question.

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7. Grade 3 · Chapter 487

   Multiply complete equal groups: rows: 10; objects in each row: 2

   A rectangular arrangement for a classroom activity has 10 rows with 2 counters in each row. Find the number of objects in the original array, explain the calculation, and check a related question.

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8. Grade 3 · Chapter 488

   Count groups of a chosen size: objects available: 13; objects required in each group: 10

   At a classroom activity, 13 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.

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9. Grade 3 · Chapter 489

   Count equal fractional pieces: selected pieces: 4; equal pieces in each whole: 9

   A supply strip for a classroom activity is cut into 9 equal pieces per whole, and 4 pieces are selected. Find the original selected amount as an exact fraction, explain the calculation, and check a related question.

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10. Grade 3 · Chapter 490

    Build area with equal square units: rows of unit squares: 4; squares in each row: 1

    A rectangular arrangement for a classroom activity has 4 rows with 1 unit square in each row. Find the area of the original rectangle in square units, explain the calculation, and check a related question.

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11. Grade 3 · Chapter 491

    Separate covering from boundary distance: width: 14; height: 3

    A rectangular plan for a classroom activity measures 14 units across and 3 units high. Find the original perimeter and area, explain the calculation, and check a related question.

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12. Grade 3 · Chapter 492

    Combine hundreds and regroup the total: first three-digit amount: 419; second amount: 116

    At a classroom activity, a first group contains 419 counters and another group brings 116 counters. Find the total after both groups join, explain the calculation, and check a related question.

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13. Grade 3 · Chapter 493

    Choose the nearer hundred: original count: 638; rounding place: 10

    A report for a classroom activity contains a count of 638 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.

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14. Grade 3 · Chapter 494

    Cross an hour boundary with minutes: starting whole hour: 3; duration: 70 minutes

    An activity at a classroom activity starts at 3:00 and runs for 70 minutes. Find the clock reading at the planned end, explain the calculation, and check a related question.

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15. Grade 3 · Chapter 495

    Read totals and differences from bars: category a: 5; category b: 56; category c: 34

    A survey display at a classroom activity records three category counts: 5 counters, 56 counters, and 34 counters. Find the total count and the largest and smallest category counts, explain the calculation, and check a related question.

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16. Grade 3 · Chapter 496

    Count groups of a chosen size: objects available: 70; objects required in each group: 6

    At a classroom activity, 70 counters are packed in groups of exactly 6. Find the number of complete groups and the remainder, explain the calculation, and check a related question.

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17. Grade 3 · Chapter 497

    Count equal fractional pieces: selected pieces: 2; equal pieces in each whole: 5

    A supply strip for a classroom activity is cut into 5 equal pieces per whole, and 2 pieces are selected. Find the original selected amount as an exact fraction, explain the calculation, and check a related question.

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18. Grade 3 · Chapter 498

    Build area with equal square units: rows of unit squares: 1; squares in each row: 9

    A rectangular arrangement for a classroom activity has 1 row with 9 unit squares in each row. Find the area of the original rectangle in square units, explain the calculation, and check a related question.

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19. Grade 3 · Chapter 499

    Separate covering from boundary distance: width: 3; height: 13

    A rectangular plan for a classroom activity measures 3 units across and 13 units high. Find the original perimeter and area, explain the calculation, and check a related question.

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20. Grade 3 · Chapter 500

    Combine hundreds and regroup the total: first three-digit amount: 323; second amount: 47

    At a classroom activity, a first group contains 323 counters and another group brings 47 counters. Find the total after both groups join, explain the calculation, and check a related question.

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