Math With Amar · Guided practice
10,000 ways to practice.
One idea at a time.
Each chapter gives you a distinct mathematical scenario: one question to attempt, a hint, a worked solution, and an animated example you can control.
10,000 questions · 10,000 animated scenarios · 14 study levels
Choose a starting point
Practice at your level.
Grade labels are starting points; school sequences vary. Advanced chapters assume the prerequisites listed on their pages.
Attempt · Explain · Animate
Grade 4 practice chapters
81–100 of 750 matching chapters · Page 5 of 38
Clear filtersGrade 4 · Chapter 81
Multiply every expanded place-value part: three-digit amount: 533; equal copies: 2
At a classroom activity, 2 identical supply sets each contain 533 counters. Find the number of objects in all the original sets, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapterGrade 4 · Chapter 82
Test divisibility by making full groups: whole number to test: 30; candidate factor: 8
At a classroom activity, 30 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 chapterGrade 4 · Chapter 83
Add eighths and regroup whole units: first count of eighths: 6; second count of eighths: 5
A measured supply at a classroom activity combines 6/8 of a unit with another 5/8 of the same unit. Find the exact sum in a common fractional unit, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapterGrade 4 · Chapter 84
Keep cents aligned when adding money: first amount: 655 cents; second amount: 320 cents
An illustrated budget for a classroom activity has costs of $6.55 and $3.20. Find the original combined cost in cents and dollars, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapterGrade 4 · Chapter 85
Combine metres with extra centimetres: whole metres: 2; extra centimetres: 40
A measurement for a classroom activity consists of 2 whole metres and 40 extra centimetres. Find the full measurement in centimetres, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapterGrade 4 · Chapter 86
Scale one digit through powers of ten: digit: 5; places left of ones: 3
A place-value demonstration for a classroom activity moves the digit 5 through 3 places to the left of ones. Find the digit's value after the stated moves, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapterGrade 4 · Chapter 87
Multiply every expanded place-value part: three-digit amount: 484; equal copies: 7
At a classroom activity, 7 identical supply sets each contain 484 counters. Find the number of objects in all the original sets, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapterGrade 4 · Chapter 88
Test divisibility by making full groups: whole number to test: 10; candidate factor: 4
At a classroom activity, 10 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 chapterGrade 4 · Chapter 89
Add eighths and regroup whole units: first count of eighths: 2; second count of eighths: 2
A measured supply at a classroom activity combines 2/8 of a unit with another 2/8 of the same unit. Find the exact sum in a common fractional unit, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapterGrade 4 · Chapter 90
Repeat a fractional amount: quarters in each portion: 4; number of portions: 1
A plan for a classroom activity calls for 1 portions, each 4/4 of a unit. Find the amount needed for the original portions, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapterGrade 4 · Chapter 91
Keep cents aligned when adding money: first amount: 130 cents; second amount: 130 cents
An illustrated budget for a classroom activity has costs of $1.30 and $1.30. Find the original combined cost in cents and dollars, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapterGrade 4 · Chapter 92
Combine metres with extra centimetres: whole metres: 1; extra centimetres: 2
A measurement for a classroom activity consists of 1 whole metres and 2 extra centimetres. Find the full measurement in centimetres, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapterGrade 4 · Chapter 93
Scale one digit through powers of ten: digit: 6; places left of ones: 1
A place-value demonstration for a classroom activity moves the digit 6 through 1 places to the left of ones. Find the digit's value after the stated moves, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapterGrade 4 · Chapter 94
Multiply every expanded place-value part: three-digit amount: 435; equal copies: 4
At a classroom activity, 4 identical supply sets each contain 435 counters. Find the number of objects in all the original sets, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapterGrade 4 · Chapter 95
Test divisibility by making full groups: whole number to test: 89; candidate factor: 10
At a classroom activity, 89 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 chapterGrade 4 · Chapter 96
Add eighths and regroup whole units: first count of eighths: 7; second count of eighths: 7
A measured supply at a classroom activity combines 7/8 of a unit with another 7/8 of the same unit. Find the exact sum in a common fractional unit, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapterGrade 4 · Chapter 97
Repeat a fractional amount: quarters in each portion: 3; number of portions: 8
A plan for a classroom activity calls for 8 portions, each 3/4 of a unit. Find the amount needed for the original portions, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapterGrade 4 · Chapter 98
Keep cents aligned when adding money: first amount: 510 cents; second amount: 440 cents
An illustrated budget for a classroom activity has costs of $5.10 and $4.40. Find the original combined cost in cents and dollars, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapterGrade 4 · Chapter 99
Combine metres with extra centimetres: whole metres: 9; extra centimetres: 25
A measurement for a classroom activity consists of 9 whole metres and 25 extra centimetres. Find the full measurement in centimetres, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapterGrade 4 · Chapter 100
Scale one digit through powers of ten: digit: 7; places left of ones: 4
A place-value demonstration for a classroom activity moves the digit 7 through 4 places to the left of ones. Find the digit's value after the stated moves, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapter