Gr. 7: Math Maintenance Quiz 23

At Doggy Day Care, the trainer puts 9 blue, 14 red, 7 green, 5 yellow, and 3 white balls in a pen. When the trainer lets one puppy retrieve a ball, what is the probability the puppy will choose a blue ball?

• $\frac{9}{38}$

• $\frac{7}{38}$

• $\frac{5}{38}$

Annette and Freddy ate 23 cookies. Freddy ate 15 cookies. Write and solve an equation to represent the number of cookies Annette ate?

• 8

• 38

• 18

Use long division to write  $\frac{7}{9}$  as a decimal.

• 0.777...

• 0.999...

• 0.666...

Find the sum of -10 + 12. How do you know whether the sum is negative or positive?

• 2; largest number sign

• -2; largest number sign

• 22; give them that sign

An amusement park charges $30.00 per person for admission. There is a 15% discount for children aged 10 and under. What is the admission price for children 10 and under?

• $4.50

• $25.50

• $34.50

A typist can type 75 words per minute. What is the constant of proportionality? Write an equation for this relationship.

• y=75x

• y=25x

• y=90x

Write an expression in simplest form to show the perimeter of the square:

Find the perimeter when x=15

• Expression: 16x

  Perimeter: 240

• Expression: 4x

  Perimeter: 60

• Expression: 8x

  Perimeter: 120

Three cats shared a large bowl of food.  Kenya ate  $\frac{3}{5}$  of the food.  Fluffly ate 39% of the food and Boris ate 0.32 of the food.  Which cat ate the most?

• Kenya

• Fluffy

• Boris

Is it possible to draw a right triangle with side lengths: 12cm, 12cm, 24 cm?

• Yes

• No

At the reptile house, the ratio of tarantulas to lizards was 8 to 12. If there were 144 lizards, how many tarantulas were there?

• 96

• 12

• 88