Missing Addends!
Goal:
Goal:
What is missing from these addition sentences?
Step right up to the booth! This is your chance to earn tickets for the fair. You will need to find the missing addends in each addition sentence to earn tickets. Addends are numbers that are added to other numbers.
Are you ready? Let's go!
Here is your first challenge. It is worth 2 tickets. You will need to find the missing number.
| 5 | + | ? | = | 9 | |
There are two ways to think about this. You could ask
yourself: What plus 5 equals 9? Or, you could flip the
addition sentence into a subtraction sentence by
subtracting the addend you know, 5, from the sum, 9. The
sum is the number you get after adding
two other numbers. For example: 9 - 5 = ?
Find the missing addend then click the button to see if
you are right.
| 5 | + | 4 | = | 9 | |
Yes! You found the missing addend: 5 + 4 = 9. That is worth 2 tickets.
It's time for your next challenge. If you find the missing addend, you'll earn 2 more tickets.
| ? | + | 6 | = | 8 | |
Do you remember how to figure out what number is
missing? That's right! You can subtract 6 from 8. The
number that remains, or is left, is the
missing addend. Check your work by adding the two
addends. The total of these numbers should equal the sum
you started with, 8. If it does, then you found the
missing addend!
Find the missing addend, and check your answer below.
| 2 | + | 6 | = | 8 | |
Yes! You found the missing addend: 2 + 6 = 8. You just earned two more tickets. Now you have 4 tickets total!
Here comes the next one. You'll earn 2 more tickets if you can solve it.
| ? | + | 4 | = | 10 | |
What's the missing addend? Remember, you can flip this addition problem into a subtraction problem. What is 10 - 4? Solve and check your answer below.
| 6 | + | 4 | = | 10 | |
Yes! You found the missing addend: 6 + 4 = 10. Now you have 6 tickets!
This one doesn't come with any clues. Find the missing addend. Solve and check your answer below:
| 2 | + | ? | = | 5 | |
| 2 | + | 3 | = | 5 | |
Yes! You found the missing addend: 2 + 3 = 5. Now you have 8 tickets!
Here is your last chance to earn tickets for the fair. You need 10 tickets, but you only have 8 tickets right now. How many more do you need? Solve and check your answer below:
| 8 | + | ? | = | 10 | |
| 8 | + | 2 | = | 10 | |
Yes! You needed two more tickets to have a total of 10 tickets: 8 + 2 = 10. Now you are ready for the fair!
Click the arrow below to go to the fair.