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Khan Academy (English - US curriculum)
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Khan Academy (English - US curriculum)
Math by grade
Illustrative Mathematics
7th grade (Illustrative Mathematics)
Unit 4: Proportional relationships and percentages
Unit 4: Proportional relationships and percentages
Lesson 2: Ratios and rates with fractions
Lesson 3: Revisiting proportional relationships
Lesson 5: Say it with decimals
Lesson 7: One hundred percent
Lesson 8: Percent increase and decrease with equations
Lesson 10: Tax and tip
Lesson 11: Percentage contexts