Math With Amar · Guided 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
741–750 of 750 matching chapters · Page 38 of 38
Clear filtersGrade 8 · Chapter 741
Connect slope and a linear rule · practice 89
For the line y = 1x + (10), 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 742
Locate simultaneous solutions · practice 89
Solve the simultaneous equations y = 2x and y = 2.5x + (7). 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 743
Follow decimal place-value scaling · practice 83
Write 6 × 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 744
Separate trend from causal claims · practice 86
For inputs [1, 2, 3, 4, 5] and corresponding outputs [-0.25, -8.5, -3, 2.5, -5.75], 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 745
Accumulate circular cross-sections · practice 87
Find the volume of a cylinder with radius 7 and height 9.5. Follow the calculation, then test the quantities in the animated example.
Question · Worked solution · Animated example
Open practice chapterGrade 8 · Chapter 746
Bracket a principal square root · practice 89
Enclose √78 after 4 bisections starting from [0, 78]. 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 747
Distinguish length and area multipliers · practice 89
Dilate a rectangle with sides 1 and 4.5 by length factor 2.25. 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 748
Connect slope and a linear rule · practice 90
For the line y = 0x + (-6), 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 749
Locate simultaneous solutions · practice 90
Solve the simultaneous equations y = -1x and y = -0.5x + (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 750
Follow decimal place-value scaling · practice 84
Write 7 × 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 chapter