Math 7 Pre - Finals Reviewer

Moana and Mawi collected a total of 48 stickers during their summer camp. Moana has twice as many stickers as Mawi.

Which of the following equations correctly represents the situation?

• x + 2x = 48

• 2x + 2x = 48

• x + x = 48

• x + (x+2) = 48

Moana and Mawi collected a total of 48 stickers during their summer camp. Moana has twice as many stickers as Mawi.

Construct a bar model to represent the situation.

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Anna is saving money in her piggy bank. She already has ₱500.00 and plans to save ₱25.00 each week. This situation is represented by the equation below:

where:

·         T represents the total amount of money saved;

·         w represents the number of weeks;

·         500 is the initial amount saved;

·         25 is the amount added each week.

In the equation T = 10 + 5w , what do you call T?

• Constant

• Coefficient

• Exponent

• Variable

Anna is saving money in her piggy bank. She already has ₱500.00 and plans to save ₱25.00 each week. This situation is represented by the equation below:

where:

·         T represents the total amount of money saved;

·         w represents the number of weeks;

·         500 is the initial amount saved;

·         25 is the amount added each week.

In the equation T = 10 + 5w , what do you call 10?

• Constant

• Coefficient

• Exponent

• Variable

Camila works as a cashier and is paid ₱350 per day for an 8 – hour shift. She earns an additional ₱50 per hour for extra hours worked. This situation is represented by the equation:

50x + 350 = y

If Camila worked for 9 hours on a certain day, how much does she earn?

• ₱400

• ₱450

• ₱500

• ₱550

Camila works as a cashier and is paid ₱350 per day for an 8 – hour shift. She earns an additional ₱50 per hour for extra hours worked. This situation is represented by the equation:

50x + 350 = y

One week, Camila worked 6 days, and on two of those days, she worked 3 extra hours each. What was her total earnings for that week?

• ₱2,200

• ₱2,250

• ₱2,300

• ₱2,400

Camila works as a cashier and is paid ₱350 per day for an 8 – hour shift. She earns an additional ₱50 per hour for extra hours worked. This situation is represented by the equation:

50x + 350 = y

Camila claimed that she earned ₱800 on a day when she worked 10 hours. Is her calculation correct?

• Yes, because 350 + (50 × 10) = 800

• Yes, because she earns ₱50 for every extra hour, and she worked 10 hours in total.

• No, because the correct equation should be 350 + (5 × 2), and she earned ₱450.

• No, because she forgot to subtract the base hours from the extra hours before multiplying.

Camila works as a cashier and is paid ₱350 per day for an 8 – hour shift. She earns an additional ₱50 per hour for extra hours worked. This situation is represented by the equation:

50x + 350 = y

Camila wants to save money for a new phone. She decides to work extra hours for a whole week. Using the same payment structure (₱350 for 8 hours and ₱50 per extra hour), which situation creates a realistic problem that follows the same pattern?

• Camila works 8 hours each day for 7 days. How much does she earn in total?

• Camila decides to ask her boss for a ₱100 increase in her daily salary. How much will she earn in 5 days?

• Camila works 6 hours for 4 days in a week. How much more does she earn compared to a normal 6 -day workweek.

• Camila’s boss decides to pay her differently and gives her ₱100 per hour for every hour she works. How much does she earn in a 10-hour shift?

Mark is trying to buy a bicycle. He already saved some money and continues to save a fixed amount every month. He wants to write an algebraic expression to track his savings.

Mark has already saved ₱2,000 and saves ₱500 per month. How can he represent his total savings after m months?

Which algebraic expression correctly represents Mark’s total savings after m months?

• 2,000 × 500m

• 2,000 + 500m

• 500 + 2000m

• 2,000 - 500m

Mark is trying to buy a bicycle. He already saved some money and continues to save a fixed amount every month. He wants to write an algebraic expression to track his savings.

From the algebraic expression in question number 2,000 + 500m, what does the term "500m" represent?

• The total amount Mark has already saved.

• The total savings Mark will have after a year.

• The initial savings before adding monthly savings.

• The amount Mark saves per month multiplied by the number of months.