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Algebra Gr. 6. #1. Which expression represents the number of stamps Sarah has left?. Sarah collects stamps and keeps them in envelopes. She had 9 envelopes with a certain number of stamps, s, in each envelope. She sells 3 of the envelopes. A. 9s - 3 B. (9 + 3) s C. 9s - 3s
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AlgebraGr. 6 #1
Which expression represents the number of stamps Sarah has left? • Sarah collects stamps and keeps them in envelopes. She had 9 envelopes with a certain number of stamps, s, in each envelope. She sells 3 of the envelopes. • A. 9s - 3 • B. (9 + 3) s • C. 9s - 3s • D. 9s - s - 3
Answer: • C. 9s - 3s
What is the area of the wall that Keesha will paint? • 2. Keesha will paint one rectangular wall of her bedroom. The wall measures 10 feet by 8 feet. A = l x w • A. 18 square feet • B. 64 square feet • C. 80 square feet • D. 100 square feet
Answer: • C. 80 square feet
What number should replace n? If 47 - n = 29, what number should replace n to make the sentence true? • A. 12 • B. 18 • C. 21 • D. 22
Answer: • B. 18
Write an expression for the number of hummingbirds Lewis saw on Saturday. • On Friday, Lewis saw a certain number of hummingbirds, h. On Saturday, he saw 3 more than twice the number of hummingbirds he saw on Friday. Write your answer.
Answer: • 3 + 2h
Explain the difference between an expression and an equation? • Answer: • Equation has an equal sign.