6th Equation & Inequality Practice

Complete the statement to match the equation 120=20n.

There are ​ (a)   students in the 6th grade at a middle school. Each class has ​ (b)   students. How many 6th grade classes are there?

• 120
• 20

Molly wants to spend at most 45 minutes on reading and math homework. She already spent 25 minutes on reading homework. Which inequality shows how much time Molly can spend on her math homework?

• Marco wants to earn at least $60 for babysitting. He earns $8 an hour. How many hours does Marco need to baby sit to reach his goal?

• Lydia wants to read at least 60 pages each day. She read 8 pages before dinner. How many pages does she need to read after dinner?

The number line represents the solution to which inequality?

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Kathy made 42 calls for work on Tuesday. On Wednesday, she made one-sixth as many calls as she made on Tuesday. How many calls did Kathy make for work on Wednesday?

Mathematical Equivalence

ON

• The average height of an adult is 68 inches. This is 10 inches more than the average sixth grader. What is the average height of a sixth grader?

• The average height of an adult is 68 inches. This is 10 inches less than the average sixth grader. What is the average height of a sixth grader?

• Last year there were 84 tickets sold to the school dance. So far, 68 tickets have been sold this year. How many more tickets need to be sold to sell more tickets than last year?

• Last year there were 84 tickets sold to the school dance. So far, 68 tickets have been sold this year. How many more tickets need to be sold to sell the same number or more tickets sold last year?

The table shows the height of a stalk of corn for four days. Which equation shows how to find the number of days it will take the stalk of corn to grow to a height of 20 inches?

Which equation is modeled?

x + ​ (a)   = ​ (b)  

• 15
• 24
• 39