Question

OPEN ENDED QUESTION

Problem: Jeff sold half of his baseball cards then bought
16 more. He now has 21 baseball cards. How many cards
did he begin with?
Part 1) Write an equation to represent the story
problem. USE B for baseball cards.
Part 2) Solve the equation

Answer 1

Answer: Part 1) X divided by 2 + 16 = 21

part 2: 10

Step-by-step explanation: Use inverse operation.

Step 1 for part 2: 21-16= 5 The opposite of addition is subtraction. So you minus the number that was added.

step 2: 5 times 2 since he sold half of them. The inverse operation is division.

step 3: Write the answer: 10