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
Browse all practice chapters
301–320 of 10,000 matching chapters · Page 16 of 500
Clear filtersGrade 1 · Chapter 301
Read three picture counts: category a count: 2; category b count: 8; category c count: 3
A survey display at a classroom activity records three category counts: 2 counters, 8 counters, and 3 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 chapterGrade 1 · Chapter 302
Join two small groups: objects already here: 9; objects arriving: 7
At a classroom activity, a first group contains 9 counters and another group brings 7 counters. Find the total after both groups join, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapterGrade 1 · Chapter 303
Remove a part and recount: starting objects: 10; objects taken away: 3
At a classroom activity, 10 counters are available and 3 are taken away. Find the number left after the removal, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapterGrade 1 · Chapter 304
Compare by making pairs: first group: 11; second group: 9
Two groups at a classroom activity hold 11 counters and 9 counters. Find the larger group and the difference between the two counts, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapterGrade 1 · Chapter 305
See ten and the extra part: counters already placed: 1; counters to bring: 1
A display at a classroom activity begins with 1 counters and has 1 more ready to join. Find the total after the arriving counters join and the original missing part of ten, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapterGrade 1 · Chapter 306
Count forward from a starting point: starting position: 2; size of each jump: 2; number of jumps: 2
A position marker at a classroom activity starts at 2 and makes 2 forward jumps of 2 units each. Find the endpoint after the stated jumps, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapterGrade 1 · Chapter 307
Align ends to compare lengths: first strip length: 7 units; second strip length: 3 units
A design for a classroom activity uses strips of lengths 7 and 3 equal units. Find the longer strip and the difference between the lengths, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapterGrade 1 · Chapter 308
Read three picture counts: category a count: 7; category b count: 8; category c count: 11
A survey display at a classroom activity records three category counts: 7 counters, 8 counters, and 11 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 chapterGrade 1 · Chapter 309
Join two small groups: objects already here: 6; objects arriving: 3
At a classroom activity, a first group contains 6 counters and another group brings 3 counters. Find the total after both groups join, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapterGrade 1 · Chapter 310
Remove a part and recount: starting objects: 18; objects taken away: 9
At a classroom activity, 18 counters are available and 9 are taken away. Find the number left after the removal, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapterGrade 1 · Chapter 311
Compare by making pairs: first group: 10; second group: 1
Two groups at a classroom activity hold 10 counters and 1 counter. Find the larger group and the difference between the two counts, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapterGrade 1 · Chapter 312
See ten and the extra part: counters already placed: 9; counters to bring: 7
A display at a classroom activity begins with 9 counters and has 7 more ready to join. Find the total after the arriving counters join and the original missing part of ten, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapterGrade 1 · Chapter 313
Count forward from a starting point: starting position: 3; size of each jump: 2; number of jumps: 5
A position marker at a classroom activity starts at 3 and makes 5 forward jumps of 2 units each. Find the endpoint after the stated jumps, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapterGrade 1 · Chapter 314
Align ends to compare lengths: first strip length: 14 units; second strip length: 15 units
A design for a classroom activity uses strips of lengths 14 and 15 equal units. Find the longer strip and the difference between the lengths, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapterGrade 1 · Chapter 315
Read three picture counts: category a count: 12; category b count: 8; category c count: 6
A survey display at a classroom activity records three category counts: 12 counters, 8 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 chapterGrade 1 · Chapter 316
Join two small groups: objects already here: 3; objects arriving: 10
At a classroom activity, a first group contains 3 counters and another group brings 10 counters. Find the total after both groups join, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapterGrade 1 · Chapter 317
Remove a part and recount: starting objects: 15; objects taken away: 5
At a classroom activity, 15 counters are available and 5 are taken away. Find the number left after the removal, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapterGrade 1 · Chapter 318
Compare by making pairs: first group: 9; second group: 14
Two groups at a classroom activity hold 9 counters and 14 counters. Find the larger group and the difference between the two counts, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapterGrade 1 · Chapter 319
See ten and the extra part: counters already placed: 6; counters to bring: 3
A display at a classroom activity begins with 6 counters and has 3 more ready to join. Find the total after the arriving counters join and the original missing part of ten, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapterGrade 1 · Chapter 320
Count forward from a starting point: starting position: 4; size of each jump: 2; number of jumps: 3
A position marker at a classroom activity starts at 4 and makes 3 forward jumps of 2 units each. Find the endpoint after the stated jumps, explain the calculation, and check a related question.
Question · Worked solution · Animated example
Open practice chapter