3.25.24 Spiral Review

What is 157.4 − 86.457 ?

(a)  

In science class, students are learning about chemical compounds. A common chemical compound is baking soda. The chemical makeup of baking soda consists of 11 sodium, 11 hydrogen, and 33 carbonates.

Match each question to the correct answer.

• 1:3

• What is the ratio of sodium to hydrogen in baking soda?

  
  

• 3:1

• What is the ratio of carbonates to sodium in baking soda?

  
  

• 1:1

• What is the ratio of hydrogen to carbonates in baking soda?

  
  

Selena made pancakes for an all-day breakfast fundraising event. She made 132 pancakes in 2 hours. Selena needs to make 264 more pancakes. If she continues at the same rate, how many hours will it take for Selena to make 264 more pancakes?

(a)  

A boxplot is shown.

• 0,1,2,3,4,4,5,6,7,8,9
  

• 0,1,1,2,3,5,6,7,7,8,9
  

• 0,1,2,3,4,5,5,6,7,8,9
  

• 0,1,2,3,4,5,6,7,8,8,9