Math With Amar · Guided practice
10,000 ways to practice.
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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

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Grade labels are starting points; school sequences vary. Advanced chapters assume the prerequisites listed on their pages.
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Grade 7 practice chapters
121–140 of 750 matching chapters · Page 7 of 38
Clear filtersGrade 7 · Chapter 121
Reverse order for negative division · practice 13
Solve 3x ≤ -2, including the boundary. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 7 · Chapter 122
Compare map and model scales · practice 13
Dilate a rectangle with sides 1.5 and 5.75 by length factor 0.5. Find the new side lengths and area. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 7 · Chapter 123
Connect circumference and circle area · practice 13
A circle has radius 7.5. Find the area and arc length of its 105° sector. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 7 · Chapter 124
Account for every box face · practice 13
Find the surface area of a closed rectangular box with edge lengths 7, 7, and 7.5. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 7 · Chapter 125
Test a summary against all readings · practice 13
Find the mean, median, and range of the five values [2, 4, 9, 11, 19]. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 7 · Chapter 126
Build a two-stage outcome table · practice 9
Two independent selections each have six equally likely outcomes. The first has 4 favorable outcomes and the second has 5. Find the probability both are favorable. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 7 · Chapter 127
Combine rational changes · practice 14
Start at -3 and apply a signed change of 1.5. Where do you finish? Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 7 · Chapter 128
Preserve a proportional relationship · practice 14
One batch has 6 units of A and 4 units of B. Find both quantities in 8 identical batches and the fraction of the total that is A. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 7 · Chapter 129
Track the percent reference base · practice 14
An original amount of 175 changes by 100%. Find the signed change and the new amount. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 7 · Chapter 130
Check a two-step equation · practice 14
Solve 5x + (-5) = 12, then check by substitution. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 7 · Chapter 131
Reverse order for negative division · practice 14
Solve 5x ≤ 21, including the boundary. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 7 · Chapter 132
Compare map and model scales · practice 14
Dilate a rectangle with sides 2.5 and 2.5 by length factor 3. Find the new side lengths and area. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 7 · Chapter 133
Connect circumference and circle area · practice 14
A circle has radius 2. Find the area and arc length of its 330° sector. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 7 · Chapter 134
Account for every box face · practice 14
Find the surface area of a closed rectangular box with edge lengths 1, 6, and 6.5. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 7 · Chapter 135
Test a summary against all readings · practice 14
Find the mean, median, and range of the five values [4, 6, 6, 12, 14]. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 7 · Chapter 136
Build a two-stage outcome table · practice 10
Two independent selections each have six equally likely outcomes. The first has 3 favorable outcomes and the second has 3. Find the probability both are favorable. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 7 · Chapter 137
Combine rational changes · practice 15
Start at -4 and apply a signed change of -1.5. Where do you finish? Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 7 · Chapter 138
Preserve a proportional relationship · practice 15
One batch has 4 units of A and 3 units of B. Find both quantities in 2 identical batches and the fraction of the total that is A. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 7 · Chapter 139
Track the percent reference base · practice 15
An original amount of 200 changes by 40%. Find the signed change and the new amount. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 7 · Chapter 140
Check a two-step equation · practice 15
Solve 4x + (0) = 0, then check by substitution. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapter