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Finding the missing number is really no different than those early childhood games we’ve all played. When presented with the problem of some numbers gone missing, young learners will undoubtedly rise to the challenge and order those numbers! And this Find the Missing Number Google Slides and Seesaw activity is a great way to go solving the missing number mystery.

Duck, Duck Goose. Hide-n-seek. Button, Button, Who’s Got the Button? What do all of these games have in common? The UNKNOWN!

Children delight in a game when they don’t know when or if they’ll be tapped, or they have to scour an area in search of something (or someone) special. It must be in our DNA.

Or is it we want to prepare our children for Algebra success from the very beginning? Either way, this activity fits the bill!

Find the Missing Number Level 2 Numbers 11-20 offers a challenge that takes it up a notch from Level 1. It is a no-fuss, easy-to-distribute virtual activity that engages young minds with every click.

This activity includes two missing numbers on each slide, whereas Level 1 included just one missing number.

You can download the activity for Google Slides or Seesaw. Each slide contains a number sequence of three with only the middle number shown.

Students can look at the bottom of the slide for three choices. Then, just click on a number to drag it up and fill in the missing number.

## Prerequisite Skills

As mentioned earlier, missing numbers worksheets truly are an introduction to Algebra. While we’ve no intention to make Kindergartners solve for x, we do know that early learning of numbers is quite complex.

Numbers 11-20 can be tricky for early childhood learners. Typically, they can engage in oral practice counting, count groups of objects, and some even take readily to skip counting.

However, recognizing numbers as written numerals requires a better understanding of numbers.

In order to really be able to understand the concept of filling in the missing number, children should first be able to:

- Count forward fluently 1-20
- Count groups of objects up to 20
- Understand that numbers increase as we count forward
- Recognize and name numbers 11-20 on a number chart
- Complete counting worksheets or missing number worksheets for numbers 1-10

### How to Use Find the Missing Number Level 2 Numbers 11-20

If you’ve ever had trouble loading external resources, read carefully for instructions on how to use the activity for Google Slides or Seesaw.

Click on the link below. Then, choose which version you want: Google Slides or Seesaw. When you clink on the appropriate link, it will open in the appropriate app and you’re good to go.

Remember to make a copy of the Google Slides version so it is your very own editable copy. In Slides, just click on the number to highlight the box in blue and drag it when the cursor resembles a plus sign with an arrow on each end.

*In Google Slides, you must be in ‘Edit’ mode as opposed to ‘Present’ mode in order to manipulate the objects on the slide.

In Seesaw, use the Text tool (click on the large T) to be able to highlight each number to move it.

### Complementary activities

Other resources on our website include the Level 1 activities. You may want to make sure learners are able to comprehend and complete Find the Missing Number Level 1 Numbers 11-20 before tackling Level 2.

If your Preschooler or Kindergartner is focusing more on numbers 1-10, take a look at Find the Missing Number for Numbers 1-10, which also comes in two levels.

## More Activities You’ll Love!

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Victoria R Gander says

So grateful to you for sharing these activities!

Thank you again ðŸ˜€

Kim Nieman says

Excited about using these activities.