Unit 2 Addition & Subtraction of Whole Numbers & Decimals (Gr 4)

An elementary school library has 13,876 books. The number of books in the elementary school library is 1,385 more books than the number of books in the middle school library. How many books does the middle school library have?

• 12,511

• 12,491

• 12,591

• 15,261

Adriel and Rudy both work at the movie theater after school. Rudy earned $145 last week, and Adriel earned $50 more than Rudy did last week. Which equation can be used to find m, the amount of money both Adriel and Rudy earned last week?

• 145 + 145 + 50 = m

• 145 + 50 - 145 = m

• 145 + 50 = m

• m + 50 = 145 + 145

Mrs. Saldana spent a total of $9.23 on 3 packs of stickers. She spent $3.75 on the first pack of stickers. She spent $2.37 on the second pack of stickers. How much did she spend on the third pack of stickers?

Mathematical Equivalence

ON

Joseph has $50. He wants to buy jeans that cost $35 and a sweatshirt that costs $25. Create an equation that can be used to find d, the amount of money in dollars Joseph still needs to buy the jeans and sweatshirt. Choose the correct answer from each drop-down menu to complete the equation.

d = ​ (a)   + ​​ (b)   ​ (c)   ​ (d)  

• 35
• -
• 50
• +
• 25
• x

The table shows the number of text messages each family member sent last week. Which is the best estimate of the number of text messages the family sent last week?

• 700

• 800

• 900

• 1000

Laney walked 3.62 miles on Monday and 4.5 miles on Tuesday. What was the total number of miles Laney walked on these 2 days?

Mathematical Equivalence

ON

A pet store has 74 reptiles for sale divided among 3 cages. One cage contains 35 lizards, one cage contains 18 snakes, and the remaining cage contains turtles. Which diagram can be used to find t, the number of reptiles that are turtles?

• 
• 
• 
• 

Caleb bought 1 cap for $10.87 and 2 pairs of shorts for $16.43 each. What was the total cost of these items?

• $27.30

• $32.86

• $42.63

• $43.73

In which of the following situations would people use a financial institution? Select three correct answers.

• Taking out a loan to pay for a new car

• Lending a family member money

• Deciding which monthly expenses to pay

• Borrowing money to buy a house

• Keeping the money they earned safe