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 8 practice chapters
261–280 of 750 matching chapters · Page 14 of 38
Clear filtersGrade 8 · Chapter 261
Connect slope and a linear rule · practice 29
For the line y = 0.5x + (-5), find y when x = 3 and identify the slope and vertical intercept. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 8 · Chapter 262
Locate simultaneous solutions · practice 29
Solve the simultaneous equations y = 1.5x and y = -3x + (-1). Classify the number of solutions. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 8 · Chapter 263
Translate every coordinate equally · practice 29
Translate the point (1, 1) by the vector (-2, -6). Find the image and the movement length. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 8 · Chapter 264
Recover a right-triangle distance · practice 25
A right triangle has perpendicular legs 3 and 3. Find its hypotenuse. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 8 · Chapter 265
Follow decimal place-value scaling · practice 27
Write 1 × 10^(-3) as an ordinary decimal number. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 8 · Chapter 266
Separate trend from causal claims · practice 28
For inputs [1, 2, 3, 4, 5] and corresponding outputs [0.25, -7.5, -4, -0.5, -8.25], find the least-squares slope, mean output, and sum of squared residuals. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 8 · Chapter 267
Accumulate circular cross-sections · practice 28
Find the volume of a cylinder with radius 7 and height 9. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 8 · Chapter 268
Bracket a principal square root · practice 29
Enclose √90 after 3 bisections starting from [0, 90]. Report bounds rounded outward to five decimal places and the exact interval width. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 8 · Chapter 269
Distinguish length and area multipliers · practice 29
Dilate a rectangle with sides 1.5 and 4 by length factor 0.75. 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 8 · Chapter 270
Connect slope and a linear rule · practice 30
For the line y = 0x + (8), find y when x = 3 and identify the slope and vertical intercept. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 8 · Chapter 271
Locate simultaneous solutions · practice 30
Solve the simultaneous equations y = -1.5x and y = 0.5x + (-8). Classify the number of solutions. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 8 · Chapter 272
Translate every coordinate equally · practice 30
Translate the point (1, 1) by the vector (1, 5). Find the image and the movement length. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 8 · Chapter 273
Recover a right-triangle distance · practice 26
A right triangle has perpendicular legs 1 and 6. Find its hypotenuse. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 8 · Chapter 274
Follow decimal place-value scaling · practice 28
Write 1.5 × 10^(5) as an ordinary decimal number. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 8 · Chapter 275
Separate trend from causal claims · practice 29
For inputs [1, 2, 3, 4, 5] and corresponding outputs [0.5, -11, -7.5, -4, -15.5], find the least-squares slope, mean output, and sum of squared residuals. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 8 · Chapter 276
Accumulate circular cross-sections · practice 29
Find the volume of a cylinder with radius 5 and height 5.5. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 8 · Chapter 277
Bracket a principal square root · practice 30
Enclose √66 after 10 bisections starting from [0, 66]. Report bounds rounded outward to five decimal places and the exact interval width. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 8 · Chapter 278
Distinguish length and area multipliers · practice 30
Dilate a rectangle with sides 2.5 and 6 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 8 · Chapter 279
Connect slope and a linear rule · practice 31
For the line y = -1x + (-8), find y when x = 3 and identify the slope and vertical intercept. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 8 · Chapter 280
Locate simultaneous solutions · practice 31
Solve the simultaneous equations y = 2.5x and y = -3x + (7). Classify the number of solutions. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapter