Math exam Friday 9/18

Jeffrey started babysitting so that he could earn money. He babysat for 21 hours last week and charged $9 an hour. About how much money did he earn? Choose the answer that is NOT reasonable.

$270

Choose the number phrase that correctly matches the word phrase"12 increased by 3."

12 + 3

Margaret earned $144 last week. Lynn only earned $12. Margaret's earnings are how many times greater than Lynn's? Choose the answer that has the correct equation AND the correct solution to the equation.

12x = 144; x = 12 times more

Jaiden earned $84 last week. Peter only earned $12. Jaiden's earnings are how many times greater than Peter's?Directions: Write an equation and for solve each problem.

12x = 84, x = 7

Janine is buying 4 books for each of her 3 brothers. What multiplication equation matches this problem?

3 x 4 = 12 books

Jacinda made 16 baskets during the basketball game. Greta made 4 baskets. The number of baskets Jacinda made is how many times more than the number of baskets Greta made?Directions: Write an equation for each problem.

4x = 16

Jacinda made 16 baskets during the basketball game. Greta made 4 baskets. The number of baskets Jacinda made is how many times more than the number of baskets Greta made? Choose the answer that has the correct equation AND the correct solution to the equation.

4x = 16; x = 4 times as many baskets

Chris ran 25 miles, while Bill ran 5 miles. How many times farther did Chris run than Bill?

5y = 25; y = 5 times farther

Marty is 54 years old, and his niece is 6. How many times older is Marty than his niece? Choose the answer that has the correct equation AND the correct solution to the equation.

6x = 54; x = 9 times older

What is the variable equal to?y • 8 = 40

7 • 8 = 56; ask yourself, "What do I multiply 8 by to get 40?"

Liz has 72 stamps in her stamp collection. Risa, who just started her collection, has 9 stamps. Liz's collection is how many times larger than Risa's?Directions: Write an equation and for solve each problem.

9x = 72, x = 8

What is the variable equal to?x ∙ 7 = 14

x = 2 (Ask yourself "What number do I have to multiply 7 by to get 14?")

Adriane jumped rope 100 times. Julie was only able to jump 25 times. The number of Adriane's jumps is how many times greater than Julie's jumps?

Knowns: Adriane jumped 100 times, Julie jumped 25 times Unknown: how many times greater the number of Adriane's jumps is

Carrie loves carrots so much that she ate 30 of them for lunch. Her sister doesn't like carrots as much and only ate 5 of them for lunch. The number of carrots Ca

Knowns: Carrie ate 30 carrots, her sister ate 5 carrots Unknown: how many times greater the number of carrots Carrie ate is

Michelle is making a scrapbook and is putting 8 pictures on each page. Her scrapbook has 10 pages. How many pictures will she use? What is being asked in this problem?

You are asked to find how many pictures she will use in the whole book.

Harry is 14 years old, and Larry is 7. How many times older is Harry than Larry?

b. 7x = 14; x = 2 times older