# Counting up to 20

## Overview

**Counting** is an important skill that we use everyday in life. When we buy items from a store, we count our money to give to the cashier. When we eat delicious cookies, we count how many cookies we choose to eat.

**Can you think of things that you count?**

Using our fingers is a great way counting up to 10. We have ten fingers so it’s easy to count when we work with numbers from 0 to ten. When working with numbers greater than 10, we can use **objects** to help us count.

Here you will learn how to count to 20!

**First let’s review all of our numbers from 0 to 20.**

**Now let’s add in some objects to match each number from 0 to 20.**

Counting is helpful when we start working with addition and subtraction problems.

Let’s take a look at the following example.

### Practice Question 1

**Lisa has 7 toy cars and Julia has 8 toy cars. How many cars in total does Lisa and Julia have together?**

We can use our counting skills to help us solve this problem. We can use our fingers or we can use objects to help us count.

Let’s try using our fingers.

– We are starting with 7 toy cars, so you can count up 8 fingers to get to the answer 15.

We can also use objects to help us count. Let’s use some marbles!

– We will use 7 marbles to represent the 7 toy cars AND 8 marbles to represent 8 toy cars. Then we can count all the marbles up to get 15.

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### Practice Question 2

**Matthew has 4 pencils. Rob has 9 pencils. How many pencils does Matthew and Rob have together?**

Solve this problem using your fingers or objects to help you count. Below we will solve this problem using marbles to help us count to find the answer.

### Practice Question 3

**Gregory has 7 stamps in his collection. Lisa has 8 stamps in her collection. Jose has 4 stamps in his collection. How many stamps in total do Gregory, Lisa, and Jose have together?**

Solve this problem using your fingers or objects to help you count.

### Practice Question 4

**Melanie counts 18 marbles on the table. Four of the marbles fall off the table. How many marbles remain on the table?**

Hint* This problem requires us to use our subtraction skills. We can use objects to help us solve this problem.

### Practice Question 5

**Stefan has 6 fingers up. Mia has 5 fingers up. Timothy has 3 fingers up. How many fingers together does Stefan, Mia, and Timothy have up?**

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