Lesson 23 Problem Set

Front

What is the total amount Lupe saves after 4 months if she saves $32 each month?

Back

Lupe saves a total of $128 after 4 months ($32 x 4 = $128).

Front

If art supplies cost $142, how much more money does Lupe need after saving for 4 months?

Back

Lupe needs $14 more to buy the art supplies ($142 - $128 = $14).

Front

How much does Brad earn for recycling 50 cans and 32 bottles if he receives 5 cents for each?

Back

Brad earns 410 cents for recycling 50 cans and 32 bottles (50 + 32 = 82; 82 x 5 = 410 cents).

Front

What is the total amount Ezra earns in a week if she works 7 hours each on Mondays and Wednesdays at $9 per hour?

Back

Ezra earns $126 each week (7 hours x 2 days x $9 = $126).

Front

How much does each marker weigh if a box of 10 markers weighs 105 grams and the empty box weighs 15 grams?

Back

Each marker weighs 9 grams (105 grams - 15 grams = 90 grams; 90 grams / 10 markers = 9 grams).

Front

If Mr. Perez buys 3 sets of cards with 18 striped and 12 polka dot cards each, how many cards does he have in total before using any?

Back

Mr. Perez has 90 cards in total before using any (3 sets x (18 + 12) = 90 cards).

Front

How many cards does Mr. Perez have left after using 49 cards?

Back

Mr. Perez has 41 cards left (90 cards - 49 cards = 41 cards).

Front

What is the formula to calculate total savings over a period of time?

Back

Total savings = Monthly savings x Number of months.

Front

How do you calculate the total earnings from recycling?

Back

Total earnings = (Number of cans + Number of bottles) x Earnings per item.

Front

What is the method to find the total weight of items in a box?

Back

Total weight of items = Total weight of box with items - Weight of empty box.