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
201–220 of 750 matching chapters · Page 11 of 38
Clear filtersGrade 4 · Chapter 201
Keep cents aligned when adding money: first amount: 255 cents; second amount: 385 cents
An illustrated budget for a classroom activity has costs of $2.55 and $3.85. 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 202
Combine metres with extra centimetres: whole metres: 2; extra centimetres: 78
A measurement for a classroom activity consists of 2 whole metres and 78 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 203
Scale one digit through powers of ten: digit: 5; places left of ones: 4
A place-value demonstration for a classroom activity moves the digit 5 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 chapterGrade 4 · Chapter 204
Multiply every expanded place-value part: three-digit amount: 502; equal copies: 8
At a classroom activity, 8 identical supply sets each contain 502 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 205
Test divisibility by making full groups: whole number to test: 46; candidate factor: 5
At a classroom activity, 46 counters are packed in groups of exactly 5. 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 206
Repeat a fractional amount: quarters in each portion: 2; number of portions: 3
A plan for a classroom activity calls for 3 portions, each 2/4 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 207
Keep cents aligned when adding money: first amount: 635 cents; second amount: 190 cents
An illustrated budget for a classroom activity has costs of $6.35 and $1.90. 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 208
Combine metres with extra centimetres: whole metres: 1; extra centimetres: 40
A measurement for a classroom activity consists of 1 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 209
Multiply every expanded place-value part: three-digit amount: 453; equal copies: 5
At a classroom activity, 5 identical supply sets each contain 453 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 210
Test divisibility by making full groups: whole number to test: 26; candidate factor: 12
At a classroom activity, 26 counters are packed in groups of exactly 12. 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 211
Add eighths and regroup whole units: first count of eighths: 8; second count of eighths: 1
A measured supply at a classroom activity combines 8/8 of a unit with another 1/8 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 212
Repeat a fractional amount: quarters in each portion: 1; number of portions: 10
A plan for a classroom activity calls for 10 portions, each 1/4 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 213
Keep cents aligned when adding money: first amount: 490 cents; second amount: 310 cents
An illustrated budget for a classroom activity has costs of $4.90 and $3.10. 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 214
Combine metres with extra centimetres: whole metres: 9; extra centimetres: 63
A measurement for a classroom activity consists of 9 whole metres and 63 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 215
Scale one digit through powers of ten: digit: 7; places left of ones: 5
A place-value demonstration for a classroom activity moves the digit 7 through 5 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 216
Multiply every expanded place-value part: three-digit amount: 404; equal copies: 2
At a classroom activity, 2 identical supply sets each contain 404 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 217
Test divisibility by making full groups: whole number to test: 85; candidate factor: 3
At a classroom activity, 85 counters are packed in groups of exactly 3. 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 218
Add eighths and regroup whole units: first count of eighths: 4; second count of eighths: 7
A measured supply at a classroom activity combines 4/8 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 219
Repeat a fractional amount: quarters in each portion: 4; number of portions: 6
A plan for a classroom activity calls for 6 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 220
Keep cents aligned when adding money: first amount: 870 cents; second amount: 115 cents
An illustrated budget for a classroom activity has costs of $8.70 and $1.15. Find the original combined cost in cents and dollars, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapter