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Lesson Plans and Worksheets for Grade 7
Lesson Plans and Worksheets for all Grades
More Lessons for Grade 7
Common Core For Grade 7
Examples, videos, and solutions to help Grade 7 students find 100% of a quantity (the whole) when given a quantity that is a percent of the whole by using a variety of methods including finding 1%, equations, mental math using factors of 100, and double number line models.
Lesson 5 Classwork
Opening Exercise
What are the whole number factors of 100? What are the multiples of those factors? How many multiples are there of each factor (up to 100)?
Example 1
The 42 students who play wind instruments represent 75% of the students who are in band. How many students are in band?
Exercises 1–3
Example 2
Answer each part below using only mental math and describe your method.
a. If 39 is 1% of a number, what is that number? How did you find your answer?
b. If 39 is 10% of a number, what is that number? How did you find your answer?
c. If 39 is 5% of a number, what is that number? How did you find your answer?
d. If 39 is 15% of a number, what is that number? How did you find your answer?
e. If 39 is 25% of a number, what is that number? How did you find your answer?
Exercises 4–5
4. Derrick had a 0.250 batting average at the end of his last baseball season, which means that he got a hit 25% of the times he was up to bat. If Derrick had 47 hits last season, how many times did he bat?
5. Nelson used 35% of his savings account for his class trip in May. If he used $140 from his savings account while on his class trip, how much money was in his savings account before the trip?
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