Question

problem solving
use any mental math strategy to solve.

1. practice use mental math the red team has 522 fans in the bleachers. the blue team has 425 fans in the bleachers. how many fewer fans does the blue team have?
2. practice use number sense there are 172 houses in kyle’s neighborhood. he delivers papers to 99 houses. to how many houses does kyle not deliver papers?

vocabulary check
draw a line to match the word to its definition or meaning.

1. subtract • the answer to a subtraction problem.
2. difference • an operation that tells the difference between two numbers.

test practice

1. avery has a digital camera with a memory card that can hold 284 pictures. if avery has taken 159 pictures, how many pictures can the memory card still hold?

a 124 pictures
b 125 pictures
c 135 pictures
d 443 pictures

Explanation:

9.

Step1: Identify the operation

We need to find the difference in the number of fans. So we use subtraction.
$522 - 425$

Step2: Perform subtraction

$522-425 = 97$

Step1: Identify the operation

To find the number of houses Kyle doesn't deliver to, we subtract the number of houses he delivers to from the total number of houses.
$172-99$

Step2: Perform subtraction

$172 - 99=73$

"Subtract" is an operation that tells the difference between two numbers. "Difference" is the answer to a subtraction problem. So we match 11 - An operation that tells the difference between two numbers, 12 - The answer to a subtraction problem.

Answer:

97

10.