Add Ten to a Number Up to 50

Let's get counting!

This activity focusses on counting and comparing numbers.

Example

Joe eats 13 sweets.

Kiran eats 10 sweets more than Joe.

How many sweets does Kiran eat?

Answer

Write the number that is 10 more than 13.

You can use the number line to help you count.

Start at 13 and then count 10 more.

13 + 10 = 23

Another way to think of it is to split your starting number into tens and ones.

13 is

1 ten and 3 ones.

If you add on 10, you change the number of tens, from 1 ten to 2 tens. You don't need to change the number of ones.

So, 13 add 10 becomes 23.

Easy, right? Can you see how the tens changed but the ones didn't? 

You can use the number line and count, or just change the tens for a quicker way. 

Let's try some questions now.